Great game, I had a similar idea (kind of popped out when I was watching Dungeon Meshi, especially the city parts) but worse. I do wonder and look forward to what mechanics will be added in the full release.
/GreenClover
When rearranging keep the monster health, maybe even remove the cooldown (but maybe I’m missing something here, that the cooldown is neccessary for).
Deleting and placing would still cost the soul and replenish HP.
Very interesting concept, great execution. Level with 2 fireballs gave me a hard time! Loved it. /GreenClover