I liked how the art style reminded me of old school tabletop gaming with the drawn in walls and the combat reminded me of Genshin Impact (there's probably lots of games that are a better example of a team with one basic ability that triggers on 'E' and a special on 'Q', but that's my limit I guess.)
I agree about panning the screen by tapping on WASD over and over again instead of holding. And I agree about the ending, but it sounds like you just needed more time with that.
My big struggle was getting the 'E' abilities to actually trigger and switching from a single unit back to the whole team. I kept forgetting which number was which unit too. I wasn't sure if the ability wasn't triggering because I missed right clicking on the hit box or because the unit I was controlling was stuck behind a different unit. Personally, I would have liked to see all the abilities lined up in the UI at all times since there's a hard max of ten and be able to see at a glance when their energy has charged back up again so I could quickly switch over to that unit and use the ability quickly.
I really enjoyed playing. The controls were pretty intuitive overall and I really liked the sound design and background art.