stamp wrote:I would like to see mute/solo buttons on groups in drum mode (midi mappable of course).
You can mute / enable any Groups/Layer by clicking the black dot on its item in the list. There is indeed no Solo at the moment though, and MIDI learn is fairly unlikely to be added I have to say (for optimisation reasons, these power buttons are technically not 'real-time' properties that adhere to live-performance level constraints, unlike knobs for example).
As for timestretch, absolutely not promising anything here, but it is something we are seriously looking into. I can say it is on the official wishlist.