Thank you for playing and taking the time to write such a detailed comment :)
First of all, glad you enjoyed it. Rotating the maps sounds like a fun idea to "force" players to try out different combinations and not just repeating what they found is working well. Someone else also suggested limiting the amounts a certain upgrade can be used, which goes into a similiar direction. Don't know the best way to realize your idea yet, but it might be something to consider for the future :)













