Honestly, these types of topics don't seem to bother the community. I've seen countless topics where someone is asking for class suggestions, and people are happily providing productive feedback and discussion, then the thread gets locked because it's against the rules.
The game changes a lot, and newer players are constantly getting into the game or returning to the game, and people want to help, so I don't think it's really disruptive to have people asking about class suggestions.
Just one recent example, threads like this I don't really think need to be locked, there was contructive and helpful debate going on:
https://www.mmo-champion.com/threads...quot-help-quot
I get shutting down threads like this that go off the rails, but closing every single topic asking for class advice seems like overkill to me.