That's a fair point about selecting a player. I think the tutorial should probably explicitly have a line like "Hover the cursor over xyz and press space to select". I saw a tester or two struggle with that for a moment, but I was maybe too quick to write it off like "Well, people have played Fire Emblem and know how to handle these types of controls, hopefully.." But I think it's an actual point of friction that could be smoothed away fairly easily.
A few people have said that about a mobile device, but I don't see it. Part of that is because originally we had mouse controls and you would click on the character then click the space to select it or what have you, and it was actually kind of visually weird to be trying to click on a tile behind players' sprites. That's part of why we ended up going with cursor control at the end of the day. I've said it to other commenters, but, ugh, I feel very burned by the isometric perspective in a lot of ways.
Thanks a lot for giving our game a shot, though!