So always and forever there is the call and return of "Get a shield!" and "Shields don't help!"
I'd like to consider a change. It would require a rebalance of upkeep, slots and probably weight for shielders, but I think that it could be a positive change.
The basic premise would be to make shields 100% effective (for the life of the shield) against ranged attacks from both the front and the back. They should not be a complete turtle shell, however, and so they should be exposed on the sides in the 80-100 degree arc. i.e., perpendicular +/- 10 degrees. This would give the shielder a total of 320 degrees of coverage against ranged items.
The one item I do not know is whether it can be coded (or should be coded) to allow melee attacks to get through the shield on the back.
To be clear, you would have to have 2 shields for this benefit, one equipped in front, the other worn on the back.
Also to add further clarification, force field would NOT work in those two 20 degree arcs of non-coverage.