My only gripes with TESO are the following:
Class based Character system
Use of the Hero Engine
Raiding and Other Elitest forms of end-game content
All other things I can look past, especailly the combat. Lets be honest anyone who prefers Skyrim Combat over Say something like WoW's traditional Superb hotbar/ability combat or GW2's hybrid of Action/hotbar is fooling themselves. There is nothing remotely fun about clicking your left mouse key hundreds or thousands of times during a gaming session. I can also look past the 3rd person, actually I prefer it way more then 1st person but that is a indivdual preference.
What I can not look past is No housing and the a class based character system. Not one TES game had a class based character system and everyone allowed the use of player housing. We the MMO fans are in dire need of some form of housing, hell it is the reason why I quit WoW. A company that makes gobs of money every month decides in their latest expac to add in Pokemon Battles instead of something more worthwhile like player housing is unfathomanble to me. Who cares if only 70% or less of the population gets to build a house due to real estate issues, companies have been ramming raids (which less then 10% of any games population participates in) for 7 years now and I dont see any company with the exception of Anet, worrying about it anyway.