In Split Tracks mode, you can jump forwards or backwards to a track marker. Is there anything similar in Cleanup mode? My last recording had a "crunch" noise at the beginning of each track, and this would have been handy.
There isn't, no. Probably the best way currently is to switch to the Split Tracks window, move to the marker and then switch back. There is a shortcut keys for switching windows - back quote (`). You can also use Alt-2 and Alt-3.