Ah, sorry for not being entirely clear. :) Let me rephrase:
I just want to move, say, bars 10-30 to the end of the song and get everything moved: clips, automation as well as any automation in buses.
You can do CTRL-A and drag select the bars in the timeline, cut and then paste. But the bus automation will not follow...
Bus automation has been made a bit easier to copy and paste recently, but trying to copy and paste a full song section in one go is still not possible. I regularly move entire choruses or verses around with lots of autmation, so this is a bit cumbersome.
I vote for removing the bus pane, and demoting buses to "regular" tracks! ;D