1-/ i am thinking of a new heal and mana system. i really hate to carry so many heal and mana potions. perhaps you can make people heal when fighting: when you kill a monster, it may drop something like rune of heal, healing stone, healing orb, healing cube... can instant heal you when you take it, and the mana is too. The Heal and mana potions must be rare and big so you can use it wisely to fight a boss. you can make potions by using flowers as well.
Oh, there is more i'm just thinking. The healing orb can be drop out when you deal crital damage to units so when fighting the boss you can get it without wait untill you kill it. that's right, you can still heal when fighting the boss no need of potions or very less needed.
2-/ my second suggestions is about the flowers. i think they are so many kinds and takes many boxes' slots. my idea is you can make a counting system of flowers, so when you get a flowers it will be added to system. i dont know how to explain my idea because of poor English. you can do it count like the omega orbs when you get that. ect: orchild flower: 0 when you get a orchild it will be orchild flower: 1.
Oh. that's just i was thinking about, may be someone can understand me. Good for you, Aero