The only reason I can see for power windows is so I can control the passenger windows from the drivers seat. If both sides of the vehicle are right next to me I can crank the windows myself and the only reason I can see for power door locks is so I don't have to lean over or walk around to the other side of the vehicle to lock the passenger door HELLO! There's only one door. If you're serious about keeping weight down on the vehicle lose two electric motors, one solenoid, the associated wiring and give me two window cranks and a key.
http://www.elioowners.com/search/463902/?q=Why+Power+Windows+And+Door+Locks&o=date&c[node]=8