True, they did do some power upgrades and features, so a non conductive floor or stairs couldn't stop them. Dalek Sec was different than most and did turn a human into a dalek/human mutant as part of the final experiment... so they did try stuff out
modern Dr Who creatures are some scary stuff for kids though... Between the Daleks, Cybermen, Angels, the stuff in the library (can't think of their name), the moon spiders recently, and everything else, My kids have to wait till they are older, then I will go back and watch modern Dr Who with them. I don't want to deal with the nightmares just yet.