Hi! Thanks for the feedback, you make a lot of good points. I'm going to add the speed change feature to the instructions on the store page so others don't end up missing it like you did.
The font was actually one of the things I really wanted to change, but I ran out of time. It was a preset that came with the UI, and instead of uploading a different font I would have had to manually go in and change all the individual sprites for every letter/punctuation mark, which wasn't feasible for me. After the jam I may go in and adjust it, but it's less of a priority.
After some research, it looks like the Alt-Tab thing is a known issue with the engine. I'll have to keep that in mind if I use this software again, thanks for bringing it up. I don't seem to be having problems on Windows 10, but that's something I definitely want to find a solution for in the future.