Striker is awesome in PvP. It's not EASY to play, and it isn't the up close and personal tank class that people want it to be. Defender is also awesome in PvP. The mistake that most people make is using their bubble as a tent. Bubbles should be used in PvP to block access routes and cut down angles. Being IN the bubble is pretty dangerous if your enemy team has supers (though you can roughly monitor enemy supers if you have a good team). It's rare now to find players who are stupid enough to feed themselves into an AoL bubble and let themselves be punched to death over and over. Defender should have: A circle mode where you get no dome top but you gain a wider diameter circle - so it's more like a perimeter fence A wall mode where you only get a single plane of shield, but it is massive in area coverage An exotic that allows you to shoot out of the bubble