Layers
Union should have a layer option so u can have a different thing (on each layers) moving around and still being able to erase it or draw the image. If you add layers can we pls be able to move them into different orders or a procedure, but everything else is fine. And if u do add layers pls do not put the background option in every other layer than the first one, unless if u changed background it will automatically change all backgrounds on each layer the same thing.
Nicking bath about
Union - Combine & Edit Photos, v1.2