What do you mean by "bring back"? Skyrim is a NEW GAME, not a copy of the previous games.
Skyrim isnt an updated version of oblivion or morrowind or whatever. Entirely new game
Demon9ne already sort of answered this, but it bears repeating. They are set in the same world. Scamps have been in the series since Battlespire. Daedra also have the advantage of not being tied to a geographical area, so it's not unlikely to see them everywhere, unlike say, Minotaurs, which for all we know are only endemic to Cyrodiil. Of course, not all daedra or even common animals make it from game to game, but I wouldn't say it's unreasonable to ask for Scamps, unlike siltstriders, netch, kigouti, or other area specific creatures.