Back to lighting.
I personally would like to get some middle-ground. In most games, most of environment is static (even if parts of it are destructible). But lights tends to be dynamic (moving player with light, time of day, etc).
What I’d like to see is some precomputed lighting solution that works with dynamic lights, but with mostly static geometry. Recently there were some interesting papers released about baking light transport in sparse way (so It doesn’t take ■■■■ load of memory and space).
Fully dynamic GI solution is probably out of question (not enough man power, to maintain it), but precomputed one + Scree Space, cloud be nice. (and it cloud eventually replace lightmass).