Things that I would have liked to add if I knew how:
1) Grimrock 1 Monsters: (snails, ice lizards, wardens, etc.)
2) Snow terrain and tiles.
3) An automatic store for buying and/or selling equipment.
4) Maybe a few more maps to increase the length.
5) Custom items or items that have been altered.

If anyone can help, I would appreciate it! :)

Maybe add a save point crystal near the start? There's no way to revive the party.

It's in the Hub past the first boss. If you die prior, you only need to redo a small portion at the start.