Thanks for playing it!
With some small fixes I should be able to make the enemies drop suns, and making the player able to plant during waves is just matter of eliminating 1 or 2 variables, do you think it would make the gameplay more tridimensional? Also it may seem that punishments are hard, but the game already rewards you for 5 extra suns for every plant you lost, to help you rebuild.
Also now I want to know, did you make it to the boss? I'm so proud of Angry Goodgis XD