I will have a good look at the Ultima games, in between my Might and Magic. I have some ideas I will test. I have a big screen, so I plan to use a smaller, uncluttered gaming window with controls on the side and underneath.
By the way, I tested a little more on Might and Magic. You were correct earlier, the Ctrl-F4 is NOT needed in Magic Dosbox, only in normal Dosbox. In my profile switch image followed by Enter is good enough. A little confusing when the game tells you to press Ctrl-F4.
I will finish polishing my design and post it in a few days.