We have made a wide range of UX improvements in C3. It first came out in 2017 and we've been making lots of changes over time since then, many of which are directly in response to user feedback, and lots of them are listed here. IIRC the change to keyboard movement of objects to be grid-aligned was directly in response to other users requesting that, and it does make sense - since the old way of doing it is basically ignoring the grid even if "snap to" is enabled, which is pretty much a bug. If you're coming from C2 then there are a few things that are different - in particular the ribbon is gone, largely because it was almost completely redundant in C2 (and in my opinion, significant pieces of redundant UI is itself bad UX design, and removing it improves that). The feedback we've had from people moving from C2 to C3 has largely been overwhelmingly positive so I think that once you adjust it becomes clear that C3 does a lot of things much better. If you think something is a bug or could be improved, you can file a suggestion or post a bug.