I've had some really great aerobic recovery improvements from doing HRIs with a sled or a Prowler, and with HICT (done with high step-ups). Even though I already had a very good aerobic conditioning level, I found after my coach added those to my training my between-round and between-match recovery improved dramatically.
We haven't done quite as much with the power-generation end of the spectrum yet but we've done static-dynamics, circuit training, and (of course) max effort strength work.
All in all it's be extremely useful stuff. Sometimes it's hard to get a picture in your head of exactly what he wants in a given exercise or how it would look when you do it, but everything I've tried so far has given results as advertised.