You can still raid here but most of our raiding scene jumped ship with the server changes and we haven't quite been able to recover since. Party finder is still active however and so long as you have patience you'll be able to do pretty much anything you could on both Aether and Primal. Personally speaking having played on both Aether and Crystal the people here tend to be more laid back and nicer.

As for RP just pick a server that seems nice and world visit for the rest. The RP scene isn't restricted to any single server anymore so you can be on Goblin, which is small but does have an RP scene, and still hop over to Mateus or Balmung to join in on their events.