I've seen this notion a lot around here that rogues need to raid if they don't want to be behind in the Glad race. Aside from the very large asterisk that is Warglaives, this just isn't really true. Not just for the glad, but even going for Rank 1. Glaives are a long shot for most raiders anyway, so I'll summarize the rest of the slots here. Please spread the word and stopping worrying people about rerolling when rogue is perfectly fine, and not even a class getting a noticeable difference from raid gear (like Holy pal).
This is not to say you can totally avoid PVE, but there is pretty minimal effort for most of this stuff. You don't need to raid with a guild whatsoever.
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