So far I go by a few rules.
BD is always nothing.
SD RS CP are usually just altered filters, maybe overdrive filter settings, or LFO filter settings.
CH OH CY CB - usually change the kits sound completely, like change sample sounds, kill volumes on hats or other things, or maybe double time hats with a delay. I use these pads for drastic changes and breakdowns.
BT is always a delay on the snare
LT is always a reverb on the snare
MT - delays and filters and on various pads, sometimes I copy scenes from CH OH CY or CB and add delay.
HT - reverbs and filters on various pads, sometimes I copy scenes from CH OH CY or CB and add verb.