* Saving the project resets the undo history. A someone who frequently saves, this is super frustrating.
* No normal zoom controls. You have to use the "minimap" at the top.
* Only a single project can be open at once, which makes copying from old projects tedious unless you shuffle files around into your current project.
* Tracks can only be grouped one level deep, i.e., no subgrouping. Most DAWs give you arbitrary grouping depths.
* No way to overlay multiple tracks in the piano roll. I end up starting in one group and extracting to individual buses afterward. This doesn't work well the other way around.
My biggest wish for the next version is project versioning. It's an absolute nightmare managing so many save "checkpoints", especially, as I mentioned, you can only have a single project open at once.