The first suggestion sounds good, it's in the game now.
There already are keybindings for all the hexes. Look for the character next to the hexagons in the top left as it indicates the hex's hotkey.
Hexinfer is a game in which you will, through experimentation and observation, uncover the rule of the puzzles while solving them.
Play
Yup, its https://ldjam.com/events/ludum-dare/45/snake-sokoban-spiral
Thank you for playing!
I think background music in puzzle games is a hard-to-get right thing, something that'd take a lot more than the 48hrs available here. Settled for a simple ocean synth instead.
Got to level 8, interesting concept. I got annoyed at times after making a mistake and not being able to undo it.
Noted. Thank you for the feedback!