I think portal is one of my favorite skills in the game, and I don't play mesmer. It needs thinking, and team play. There where a time where it was broken, mostly because mesmer was too good overall, but now I think it is really a "pro" skill to use in competitive environment with some coordination.I remember when a esport tournament (long time ago) was won with a portal to the lord on Legacy, it was so much fun to watch!I think this game can only get better if devs push team plays like: portals, combo field, etc