Are you using the kite shields for the entire unit, or just the champion/SB? Seeing as you've painted each trooper to such a high level, it would be a shame to hide it behind a kite shield, just thinking maybe a smaller round ones would work as well? The kite shield might be more aesthethically pleasing, but the round ones always seemed more organic to me...
Fantastic work by the way, like your intepretation of the bases, neat yet effective.