Thanks, guys, it's always good to hear from people who are as enthusiastic about the game as we are.
For making energy shields more interacting, they could be dropped as barriers that you can circumnavigate around to shoot, something that you drop on ground and use as cover/barrier against others. They could be squares or triangle or dome shaped or just a big line that slowly deteriorate when it is being shot until it is gone. Using it, could eat a chunk of your energy making another barrier pop, they would also be pass through by anything that walks over them.
The AI would need some tinkering around, but i'm sure it shouldn't be hard to tell them to hide behind the shields after shooting at the player or between picking the priority of shooting the energy shield down or go around for the player.
I'm not looking to do such a radical change, they will still remain attached to the player.
Instead of dropping it you could make the shield directional. Let's say that the most basic ones can only protect from hits which come from the way you are facing but cannot protect from the sides or from behind. Later shields might give you more all around protection but at the expense of higher energy consumption and/or reduced absorption. You could even make it so that you can adjust the shield's coverage depending on the situation.
Illustration:
C= character looking to the right
X= protected
O= not protected
Basic, 100% absorb, normal energy usage:
OOX
OCX
OOX
Flank, 75% absorb, 25% higher energy usage:
OXX
OCX
OXX
Full coverage, 50% absorb, 50% higher energy usage:
XXX
XCX
XXX