I'm happy you enjoyed it. :)
We had a lot more ideas to add variety to the gameplay loop like adding defense systems in form of spawnable creeps. I'm not sure if we'll continue working on this but if we do i'd like to explore the idea of a 5x5 grid and trying a more predictable pathing system. I would in general give the players more tools to actually impact what's going on in the maze. Once that's established i think we could definitely add an ever increasing spawn rate.
And yea, the UI and readability definitely needs work.
Thanks for the detailed comment.