I currently use the arranger track to test out different sections of a song. Which is a kind of alternative to the traditional ableton style clip based arranger. It would be so much more flexible and versatile however to be able to mix and match different sections and tracks of a song like Logic Pro etc. It makes song creation so much quicker and creative. The only way of doing it now is copy n pasting different sections everywhere to try out different combinations of sounds. It would so much quicker to do it like Logic Pro and all the other daws do it.