The over shield applied to team mates while they are near you needs to be increased DRASTICALLY. (The radius needs increaseing)
The over shield strength needs to be increased. Its very easy for PvE ads to break.
Melee energy you get from kills while the over shield is active needs to be increased DRASTICALLY
All melee kills while the over shield is active should grant motes of light as well
Also I would like to continue holding down my Super buttons to remain in the casting animation to grant an even greater bonus for my team... like Saint-14 and Zavala do in the trailers. Also when the bubble takes damage it should spawn orbs of light