Clones don't fail because of the combat. Hotkeys and tab-targetting is the most efficient combat system in MMO's, that's why it is used. Some games have altered that combat system, like AoC, WaR, and Rift, but in the end, it is still the same system because it is the most efficient and proven.
Clones fail because the only end game is grind. Progression is locked into levels and a linear thinking.
A lot of things about the TES series can't be duplicated in a MMO. Sacrifice must be made. Things like thousands of items that you can pick up and move around throughout the world. Being the hero, you guys really need to let this one go. You aren't the king of the world any more. FPS combat style, with no auto targetting. Name a AAA MMO that has a FPS combat system. There isn't one, and there is a reason for it. Name another MMO with FPV that is AAA quality. There isn't one, and there is a reason for it. The general gaming population doesn't like it. I love Skyrim, but I played it in TPV because I can't stand FPV. I knew these things had to be changed before even knowing about a ESO release. The hiding and stealth isn't going to work in a MMO. It would be far too complicated, and in a lot of instances, it simply wouldn't work. Pick-pocketting will probably not be in ESO. Killing anyone, anywhere and looting their gear will most likely not be in ESO. Though, that's unfortunate, because I feel this game could be a godsend for sandbox gamers. It just won't happen.
I will be okay if the lore and world are accurate. I will be happy if I can tell that it is an Elder Scrolls game just be looking at it. I will be happy if the developers give us something more than linear end-game progression. We need other things to do. The exclusion of housing is my biggest gripe though. That is one of the most time consuming systems that you can have in a game. Not only that, it gives players personal property within the game world. It makes those players feel as though they are part of a living, breathing world. I don't understand the thought process behind leaving out housing. One of the first things I would do in Oblivion and Skyrim is save up for a house so I could store all of my belongings. Don't tell me it's not possible. Ultima Online did it, albiet poorly, 15 years ago. It's laziness.
Ultimately. What I'm saying here is if this game were copied as is, into a MMO. It would fail. FPV and manual aiming isn't successful in MMO's. It would cause problems acrossed the board. It's just how it is.
Ultima Online did a "sandbox mmo" very VERY well in the late 90's, one of the first graphical rpgs otu there. It had the sandbox world (no quests/theme park design like EQ would use a year or so later). You could kill ANYONE anywhere, full loot their bodies with every single thing on them (and no this wasn't "terrible" because in UO items/equipment were nothing like in WoW, where you grinded for them, it was player crafted mostly and did not "make" your character like most rpgs).
In UO you could play how you wanted, you had pkers (reds, people who killled other players) anti-pkers (basically your " good guys" who would hunt reds down) then you had many people in between that didn't care and did other things, such as player crafters, animal tamers and things. Cities (The bank area's) were filled with real players who would come there to hang out, sell goods, etc. Everyrthing felt "Alive" in UO because it was so odynamic and built around providing the players witha sandbox and let them shape the game how they wanted. You could pickpocket in UO (In a city if you were caught doing it, the player could yell Guards and they'd come and kill the pickpocketer).
However since then UO has drastically changed into an "eq" like formula, pvp is no longer open like it was, there's a questing system, and other things. No game since then (From a AAA publisher) has been likle that, built toward a sandbox experience.
As far as your comment about "combat" and how it can't be done that way umm, WWII online did it on on mmo scale over a decade ago. Planetside 1 (2 is in development currently, same fps style combat), You have the recent TERA that literally just came out last week, you have Guild Wars 2 which is coming up doing a fps style combat where you have to actually aim and can dodge attacks, etc. So your "it can't be done" flies out of the window with all these examples, it CAN be done, they just don't want to.
While not a AAA mmo, look at Mortal Online, it's got a GREAT first person view system built into it, complete with mounts and combat like TES, if an Indie developer can do it why can't Zenimax? You do know it can be an OPTION and not forced for everyone right? So those of us that like fpv (which many TES players do, as that's what it's built around, ask Todd Howard) can play it that way, and those of you that want tpv, can have the option to. I mean this is a Win Win for both sides, so why do you not think it shoudl be done?