It's a mixed blessing adding more professions. People have their individual tastes and for me I don't play a mesmer, rit or assassin, although I'd probably play an assassin if I didn't already have 7 characters to play and plenty of things to do - you know, if I could retire and just play GW all the time!
As far as new professions I say mixed blessing because:
- it is good to get new shiny professions to play, new skills, armor, toys, ways of doing things
- it is bad as it adds yet another toon to play thru a lot of content
- it is good to stir up the mix of professions - at least in theory
- it is bad if they get shunned by the community
As far as a person playing a certain profession not being accepted by the crowds, the answer is easy: get in a good guild that accepts whatever you want to play. Naked elementalists FTW!