Ears actually handles turning input into gates I think (I've never used it for this purpose), so definitely check it out.

The nice thing about the TM is that it's repeating randomness. I don't know how the Maestro works but let's say you set your TM sequence length to 4, triggered way slower than your drums, like /64, you then feed the TM into a high impact input on your Bloom or Marbles... voila you have a song structure as the TM adjusts how your sequencer performs, changes it a few more times, and then returns it back to the beginning state, slowly shifting this pattern over time.