Now, I can't speak for every MMO out there that has a jump feature and yes, I've seen first hand WoW videos and being in game how people hopped around like rabbits..but from playing GW2 these last couple of days, I use the jump feature to scale objects in my way and once in awhile, I catch someone doing a jump in random..but nothing like what you're describing, nothing with people standing around just jumping for the sake of the feature being there. So honestly, I think it'll be ok. Without any additional restrictions.