A thing that bothers me when using plants is that after you place some widgets inside them, you cannot move/edit/insert/remove them anymore in the GUI…
From what I’ve seen, for now you have to create a plant in a dummy project, place all the objects so that the reference is the (0, 0) top-left point of the plugin window, and then, after you are satisfied with the widget appearence, copy&paste the code in your real project, after a groupbox or image parent widget code.
It would be nice to have some way to edit the children widgets always with the plugin GUI. For example, you could make so that if the user press the TAB key when you are on a parent widget, Cabbage would switch to the widget children area (setting the coordinates so that (0,0) is the topleft position of the parent widget) and let you edit all the objects inside the plant directly in the GUI. Another press on TAB and Cabbage would return to the parent widget area (and reset the coordinates to the topleft of the window that contains the parent widget).