Oh yeah, I use the armor duplication glitch quite a bit.

People keep mentioning a "basemant" in Proudspire. Are y'all referring to the first floor or a basemant added from a mod?

The first floor (street entrance) is called a basemant on the map, IIRC. I lived there last game. My mannequins danced every time I came in that way. Freaked me out.
Was the Dawnstar chest changed in the patch? I went there looking for it, armed with photos and maps from online, and couldn't access it. So I tcl'd and went under, and it's waaaay below the ground and its trigger is actually on it rather than above it. Maybe those crafty cats got wise.
I plan to make use of Mehrunes Dagon's respawning shrine. I've pretty much cleared the surrounding area so I shouldn't have any problems accidentally entering the cell and breaking it. We will see, I guess. Now that I've switched weapons to work on my two-handed skills, fighting summoned daedra is fun again so I'm looking forward to it.