The most needed class is the one you enjoy playing the most. Sounds like a cop-out answer, but burnout is a serious problem, guilds have plenty of members come and go due to it all the time. It's always preferable to have someone who is dedicated and consistent (because they enjoy playing the game / class) than an enchanter who shows up to 2 raids and quits, for example.
My honest opinion, i think the server has a small need for good lvl 60 wizards - haven't encountered a ton in my playtime and Wizard Lures are ridiculously good in Velious. Otherwise, enchanter, warrior, Cleric are always good classes that guilds are after.
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just laura \o/
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