I have been looking for a mod that adds a crypt under Proudspire manor for some time now with no luck. Mainly what I would like to do is something similar to Alva's cellar with the coffin in the basemant, just with more of a crypt/hall of the dead look. Here is visual concept that I made in the CK of what I'm trying to do.

http://img526.imageshack.us/img526/4740/proudspirecrypt.png

Basically it will be a secret door entrance on the base level of Proudspire manor, a similar set up to the blades hide out at river wood. The closet/secret door with a have stair case that will lead down to the crypt were there will be a coffin for your vampire character to rest. The coffin will set on a tiered floor kind of like it does in Alva's cellar.

Alva's Cellar

http://img201.imageshack.us/img201/7130/2012071800002.jpg

I'm not advanced enough to make this happen yet, I can help with testing if a talented modder wants to take up the mantel. I have played through the DG dlc and the castles are not really that good imo, I still think the player houses are better I just want to make Proudspire a little more fitting for my vampire lord once Dawnguard comes out.

p.s. I might even throw in a copy of Dawnguard to sweeten the deal