Navichord allows you to set up sets of 16 pads which can send MIDI chords to any MIDI receiver.
But it goes further in it uses Ableton-link in order to then send out chords in sequence - timed to ableton
And allows for song-sections. The (static) chord can then drive pads and arpeggiators etc etc in Ableton.
It would be great to have this kind of functionality ( minus the chord matrix which i never use ) in T P as the less apps one has to use at the same time the better.