i agree, but don't forget that, broken down to the core, those "changes" due to eye contact and gestures are changes in timing and "feel". With snap feature, you can certainly mimic that to whatever extent you want. We can move a hit before or after the beat, by whatever margin we want.
When I played with my old group, i'd look back at the drummer and wait for his arms to start moving toward the cymbals for that final "bam"...well, that hesitation can be created by moving the hit placement tiny increments..or longer, whatever you want, however often you want. it's time consuming, but it can be done. Now, do all ppl use that to their advantage? certainly not, me included. but the capability is there.