Thanks for the great feedback!
Yeah I though the same when playing after the jam. What do you think about a size counter ui like this?
Viewing post in Cosmoroboros (Jam version) jam comments
I think that would definitely help out, circling the galaxies still makes you to have to count the spaces around it but at least with that it's a fixed number unlike the length of the snake so you're only counting once per level now. There's probably lots of instances where there's more than just one way to loop around the galaxy if it's not at the center of a 3x3 square of tiles. So also displaying info on the number of tiles you need to circle around a galaxy would probably be needlessly complicated and maybe a bit unnecessary depending on the feedback you get.