i think it’s great if a little tricky to use
no audio recording means you have to use other programs if you want vocals although there is a workaround in the sampler , i dont think it needs a piano roll , but adding sections is a bit cumbersome , and some kinds of better grab tool to grab blocks and duplicate them easier would be better , if it was more like a daw but then still itself without a piano roll it would be a hell of a program and would earn a lot more money at the money it’s a very niche thing .