Wow....I missed the follow up question.
So here's a for instance...
I will typically take the snare top/snare bottom channels and feed them to a third channel (via aux sends) for heavy processing (tight gate, heavy compression, radical EQ). Then I took all three channels and tucked them under a single fader (alternatively easily done with VCA/DCA groups in MixBus).
My drum routing in general can look pretty crazy.
Drum Master
Drum verb
Drum parallel crush
Drum submaster
Kick fader
Kick inside
Kick outside
Kick sample
Snare Fader
Snare Top
Snare bottom
Snare crush
Snare verb?
Toms
T1 - T(x)
Hat
Ride
OH L
OH R
Room L
Room R
And whatever else. There could be quite a bit of other crap in there too. Tracks to busses, busses to busses, tracks to auxes, tracks to tracks...The DAW makes this somewhat easy to do (especially Reaper). MixBus by design gives you an unlimited channel, 8 bus mixer with a few auxes. It's not exactly flexible and the things I did to work around the limitations within MixBus ended up breaking the rules of MixBus.
I checked out of MixBus in the early stages of V3. I thought 32C looked to be a really good improvement, but I wasn't going to spend the money to find out. I have no idea what V4 brings to the table. As I said, I checked out of MixBus pretty early on and maybe some of my routing gripes are fixed in the new V4 version.