No. The fact of the matter is, the skill system of past TES games simply won't work in an MMO, primarily because it offers almost no build diversity. You cannot have build diversity without set rules and limitations to fit builds into, which is what the skill and class system of ESO is. Saying the classes are against the lore doesn't really hold water either:
Dragon Knights are based on the Akaviri Dragonguards. The Akaviri have, until relatively recently, ruled Tamriel through the Potentate; so their influence remains strong. Not to mention the lands of the Ebonheart Pact was invaded by the Akaviri just a few years before the events of ESO.
Templars are, IMO, based on Stendarr's more militant followers. While the Vigilants of Stendarr would not be formed until after the Oblivion Crisis, there's almost certainly been other holy orders of the God of Mercy/Justice/Whatever in the past; particularly since the situation in ESO's time is not unlike what later occured during the Oblivion Crisis.
Sorcerers seem to embody the dark side of magic, particularly those that deal with Oblivion: summoning Daedra, forming shadow pacts, wielding arcane lightning, etc. You've seen plenty of their type in past TES games, mostly as enemy conjurers.
Nightblades are magical assassins, augmenting their physical capabilities with magic; particularly from the School of Illusion. I'm sure many people who've played past TES games can relate to this type of character, it seems to be a pretty popular playstyle.