One of MMF2's coolest features must be layers. Bunny Mage will make good use of it. When you enter a house/cave/room you will actually be positioned on another layer, the layer with the contents of the structure you're entering. This is inspired by the old monsterworld series on the sega systems.
I had some idea's to do this in MMF1.5 but I'm not really a coder so i waited for MMF2. I'm really happy with the result and I'm anxious to see what kind of cool dungeons i can make with this. Imagine Zelda, with the locked doors and stuff, but now in side scrolling form. =D