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I'll start off my reply by quoting my reply to another user, as it appears that it needs to be reinforced.
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That appeals to the extreme using the wrong correlation. You correlate a new player attempting to obtain mastery books with a player intentionally limiting themselves via stat restrictions because they both are inefficient; but a new player would only be attempting to find mastery books for their skills to be efficient. One is playing how they intuitively know to play maple, while the other is intentionally going against that intuition.
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Ad hominem.
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Once again that is appealing to the extreme using an incorrect correlation. A new player isn't necessarily someone who is voluntarily limiting themselves from efficient progression. Inefficiency in new players is usually due to either growing tired of the efficient method, or being ignorant to the efficient method's existence.
Also, it takes a LOT more then a few hundred legion levels to effectively farm RTO4.
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I could repeat myself, but I'd rather link to another of my post from above.
In regards to your comment about how looking for skillbooks being the efficient path is the most intuitive approach for new players playing this game reaching level 120, I want to say that this is true, but only in vanilla MS. Since players are playing pservers, I would imagine that firstly, as a background they most likely know that pservers are different in some way to vanilla MS (whether it be exp rate, unique features, rebirths or whatever), and secondly, since they chose to join WindiaMS, they most likely, and at the very minimum, researched and looked at what unique features does WindiaMS have.
If they did that, they should at least notice that Legion levels are pretty important. Now, they may not figure out that it is the first thing they need to work on to be "efficient" or that after lvl 120 you should create another char, but that probably just means we need better guides. My point is, that in the case of vanilla MS, finding skillbooks after lvl 120 on your first character, is "intuitive", but since you are playing a pserver called WindiaMS, and after you read the features of WindiaMS, hopefully intuitively you realize that having legion levels may just be as important, or at least more important than trying to find that gene 20 skillbook on your very 1st bishop from multi million HP oblivion guardians.
Suppose you didn't realize that in the beginning, and you did try, on your 1st bishop to 20 hit oblivion guardian, then I hope that at least at some point, a light bulb went off in the new player's head that this is probably not the "efficient and intuitive" way to play this game. At this point, I sure as hell hope they either ask someone on whether this approach they are taking is "efficient", or alternatively look for a guide on the forums/discord that may suggest a more meta approach. If no such person or guide exists, then our problem here is not about skill books, its about lack of guides for new players. You cannot expect us to hardcore hand hold new players, we need to assume they have some level of logic here. We are all adults presumably with some capability of reasoning, and most adults don't just bang their heads against the wall over and over.
In general, as with most players playing pserver, their intuition about how their pserver should be played, should change from their vanilla MS. And for new players, they need to have that mindset shift as well.
Second point I want to make is your seemingly antagonistic attitude towards people telling new players to "find another pserver". First of all, I want to be clear that at least for me, it is not meant with malice.
Further, I would argue that when a new player doesn't adjust to the unique features of WindiaMS, it most likely suggest that WindiaMS doesn't fit the new player's playstyle. I believe this is true because ultimately speaking, players won't enjoy playing the game in a way that goes against how the creators of the game designed it (back to banging your head against the wall). If you accept this is true, then this would eventually lead to less satisfaction playing WindiaMS, which leads to a possible decrease in vote/donation counts, and decrease in playtime.
If so, how is having a dissatisfied new player beneficial to the server in anyway, or is the goal just to up the player count no matter what (which won't even last in this case anyway)? If new players don't form their "WindiaMS intuition" of something as simple as working on Legion levels before skill books, then they will have a harder and harder time progressing in WindiaMS. How will they survive figuring out how to farm the hundreds of cogs needed to get tyrants, to get into Vera?
If for them, grinding for legion levels (or doing the 250 quest) is "boring", then god forbid when they start having to grind out cogs for veracent or tyrants. If they truly find grinding boring, maybe they should try a rebirth server that progress much faster and have more instant gratification. This also relates to your comment about "growing tired of the efficient method". The nature of MS, vanilla or Windia, is about the grind. If you grow tired of the most efficient progression method possible, then I would say WindiaMS is not really for you, and again, you should probably join a rebirth server, where the "efficient" method is probably faster than WindiaMS.
The final 2 points I want to make is about your comment of "being ignorant of efficient method". In that case as I've briefly mentioned before, that just means we need better guides and better visibility of those guides for new players. That is a separate discussion. And also, even tho RTO4 probably does need a sylph ring to farm, it doesn't change the fact that you don't have to efficiently farm RTO4 to get your skill book. I would argue that new players can probably do quite well with just getting a gene 20 from RTO4, with 2500 legion levels, and using an I/L archmage. It for sure will take less than 20 hits to kill 1 oblivion guardian.
Bottom line: The reason new players chose to come to WindiaMS (and any pserver in general), is that they wanted a different way of playing MS, compared with playing vanilla MS. Otherwise why are they here? Therefore, it can be argued that it is THEIR RESPONSIBILITY to first know how is WindiaMS different to vanilla MS and other pservers, and to form the "intuition" for playing WindiaMS due to these unique features. They are free to not follow that intuition and play the same way they did in vanilla MS, but they then need to keep in mind that they might just have to 20 hit oblivion guardian to get their gene 20 on their first char as a tradeoff