I got kicked for using force bubble

What's so horrible about the WP taunt aura?

The taunt effect has a tiny duration compared to other powersets. IIRC, it's something like 1.5 secs versus 12 sec.

Unenhanced RttC has a taunt duration of only 1.25 secs against +0 critters, which drops to even less against higher level foes. Essentially the moment a foe leaves the radius of RttC, they can lose agro off the tanker, if other tools are not used to make up for it. Compare that to the other taunt auras that have a unenhanced duration of 13.5 or 16.9 seconds (Invulnerability and Shield Defense). Some of the sets even have more than one taunt aura they can run at the same time.

Using Taunt or a lot of AOE attacks are really the only reasonable tools a WP tanker has to maintain agro.

That's not really surgical precision. That's the cancer jumping out of the guy's chest and jumping at the doctor, who pulls out a machine gun and blasts it until it dies squirming on the floor. Gets the job done, but not precise.

Force Bubble must be USED with surgical precision. I think that's the point. If used in exactly the proper circumstances, from precisely the right location on the map, it can protect a team better than any other power in the game. I know, I've used it that way. But the situational nature of those opportunities arising in the game is one of the main complaints that are used about FB.

For the record, I think the OP saw once of those exact surgically precise opportunities, and took advantage of it. You may disagree, but since you weren't there, that's hardly important. What's important is that knowledge and experience were apparently trumped by egotism, which is something we've all had to deal with.