Well, I'm sure it's fine to adapt your room so long as it's contained inside the room. But if players want that extra protection, why not just go that way in the first place I guess? The rooms aren't THAT big. But I'm kind of wishing I'd put in space for an extra layer on the floor now so that people could use wool to make colored carpet or something. But it would make the building just that much taller and make the outside probably look disproportionate.
Here is what I came up with for floor plans, if that helps any:
(Since I couldn't find the building that they used for the tower, I found one that looked similar and went from there.)
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