Personally I think that Defenders should be able to throw grenades through their bubble. Not your allies, no gunfire, just grenades. I came to this conclusion after having my bubble surrounded on multiple occasions. In PvE this means you're being constantly bombarded with gunfire and can only survive about a quarter of a second once you step outside to attack. In PvP this means enemies circle around your shield like sharks either waiting for it to drop, or waiting for their super to charge so they can pop the bubble. Allowing the Defender to throw out a grenade would keep enemies honest without being OP; you only get one, after all (Armamentarium notwithstanding) so if you miss or if there are several enemies it isn't going to kill everything. All it would do is give you a little breathing room, since as it is you can't do much unless someone is foolish enough to step into your bubble. Given that this is the only super that doesn't deal damage and particularly in PvP it doesn't really keep you that safe I think this would be fair, but what do you all think?

Get St. 14's helmet, it makes a difference when what ever enters goes blind and cant find you to hurt. I haven't tried it out in the raid (Beat it earlier in the week) so I dont know if the Minotaurs or harpies are effected or considered "immune" to the ability.

I don't really think making it bigger is going to help much. But buying the new exotic helm from Xur today or tomorrow will. Blinds enemies that pass through it (like a flashbang grenade on the striker) so if the minotaur decides to chase you, he is going to be out of commission for quite some time. Also, since the shield is curved, you can often stand BEHIND it, and shoot over the sides, letting the shield absorb most of the return fire. Handy if you don't have the version granting the overshield.

If you want more room or mobility, you could always swap to the ability giving you a shield every time u pass through it. Pretty much infinite shield if used right. Personally I don't like it (I'm usually sporting a shotgun). But its an alternative.

I like your bubbles. Lovely bubbles.

Titan defender you really only got 2 choices in the raid you can either high up on benefits and go either shield on passing through or increased weapons as well I usually put high recovery speed and only use the bubble to reshield reload or more damage doing a orb build I didn't like it as much nor found it overly useful in the raid and I usually save my nade which is sticky only for minos to take out their shield and let my weapons do the rest Now there is a 3rd build but you need the exotic which is saint and that blinds in which case armor on the inside which is helpful though I usually go weapon damage still but it helps a lot when defending portals and harpies as well help teammates who need to recover their shields As a defender on the final boss you want to be on outside killing harpies,reviving teammates,defending the gates and then use weapon bonus damage to stack to hurt the boss Exotics go for the exotic rocket launchers if you want though pocket infinity makes a great choice and red death