Hey Jordan,
Thank you so much for the feedback. I though of adding plant variations but decided against it because I felt they would all do the same thing. For different plants to work well there should be a cooking mechanic or something. My plan now in order to keep the food stuff simple is to add a whole row of buildable objects everytime you upgrade the house. Each upgrade will get 1 plant, 1 tree, 2 Defense items, 1 survivor controlled item, 2 Offensive items, and 1 Special. The later trees will have fruit and wood and the plants will will have different grow times and yeild amounts.
I'm working on some crocodiles for the swamp, but I do agree the piranha plant would be amazing,
Thanks again for all the feedback and suggestions, Lots of updates coming very soon,
Rafi