Thanks for giving it another try! The shields are kinda a more powerful form of healing that doesn't cap, but the downside is that you lose all your shields at the start of your turn (you are probably getting a lot of shields back after it's depleted from Defender/Absorb + stray projectiles). I don't communicate this very well, but I'll probably put it in the item descriptions at least xD
As for saving: that's on my list of things to do tomorrow! >:D
(will not work with web builds though)