@Bethesda: If you ever planned on doing more with Vampires, seriously take this post into consideration!
It doesn't seem like they were that fussed about putting them in this game in the first place, hence the reason they lazily copied an pasted the previous awful vampire system from Oblivion, and broke their own lore in doing so.
I do like your idea for multiple vampire paths. The info surrounding vampires in Skyrim only mentions one clan. A magically inclined sounding clan, and according to the lore, there are over 100 hundred vampiric bloodlines in Tamriel. To put two or more clans in to represent different playstyles(like in Daggerfall but esp Morrowind) is not asking too much at all. In fact, the lore demands it!