Hello,
So for my setup i normally use
2 eiki x80s with various lensing, mostly .8 short throw lenses
extron cat 5 tx/rx
desktop media server
korg nano kontrol 2 for effects
maudio trigger finger for video drumming
for firing off clips/terminating clips i use the keyboard or more commonly, the mouse. I personally dont see what the point in using midi triggers for starting clips is, sure it looks cool, but the chance of you triggering the wrong clip is much greater imo.
with the korg nano i set up rows of composition and layer effects and make them all uniform and map the knobs to correspond with the layout i make for that set.
with the trigger finger i have it composition mapped to cue points, playback speed, master fader what not. this way when i am playing a video clip back i can instantly set 6 cue points and drum out the cue points to the music, mostly on build ups and what not. From my experience the more though you put into your midi layout the better your show will go, if you over complicate your setup then you are going to get confused and not get the results you want.
i dunno if this is what you are looking for but i hope this helps.
