Set default window size

When the map is too large, its window opens maximized, sometimes covering the entire screen. Property sheet windows, on the other hand, open at minimal possible size (and if they only contain a text field, barely any space appears at first). In both cases, windows need manual resizing before they can be used comfortably. It can be particularly confusing for people new to the module, and somewhat annoying when setting up character sheets and the like.

Would it be possible to add an ability to set a default starting window size for property sheets and maps?