Based on accidentally viewing half an episode of the original Battlestar Galactica, there are a few obvious ways the new one has improved on it.
-- no obese Cylons soshinythey hurt -- no cute children in main cast, especially ones called "Boxey." -- And especially no furry animatronic teddy bears! especially ones called "Muffit." -- better insults. "Go rust yourself" is no match for the frack family of cusses.