Those are not all new features, and most of those are actually software microsoft bought and integrated into vista. Bitlocker was bought from a defunct company (Which I believe was called Intrinsik) Voice Recognition was available in XP, Readyboost delivers less than a 1% advantage in any REAL benchmarking tests, and the disk partitioner is far from being a stable product.
And yes, it was a main focus to develop a fancy UI, Direct X 10, and Aero Glass were a huge part of Vista's development, as was the completely useless sidebar.
As for how Vista is over protective, have you ever tried to install anything on a fresh, defaulted copy of Vista? There's this thing called UAC, and it's f---ing retarded. Everyone I know has me turn it off for them as soon as they get it. (Not to mention revert them back to XP a month later when Vista pisses them off)
Superfetch is a good addition, but again, it needs to have an on/off menu. Using it on anything under 2 GB of ram hinders a system, and the majority of people are still at 1 GB. (1.36 GB is actually the calculated average according to a few surveys I've seen).
Vista is a piece of junk.