I don't play much MOBAs, but I would definitely try out a first person one.

There is one called Smite

Haha, Skyrim has an amazing gameplay? You clearly haven't played Dark Messiah: Might and Magic.

I think it would work like Smite.

MOBAs depend a lot on vision of area for tatics and teamwork, a first person one would change a lot of all that, and would have to be mutch more focused on voice imput for tatics once you can't see a friend behind you or ping minimap in the mid of action.
Sound like something that could be worthy a try, but can't say if would be bad or good.

If you think about doing something like that you should maybe try first as a mod for some first person popular game, if it make sucess you can try to launch as a standalone game or make your own from zero and try greenlight (but if the mod make sucess you would even be able to try direct on steam I guess), Counter Strike started like that.

Edit: People talking about "Smite"? Googled and here's a link It's good? Worthy of spending time to try? What you people who already played say?

Super MNC is almost a first person moba
Would be annoying if you couldnt see a little behind you or your sides

Smite isn't first person.. It's 3rd person

"and it would play like DOTA 2 or League." It wouldn't play like Dota 2 or League.

Well as people said before, Smite is the closest thing to it but it is third person. It wouldn't be that different anyways. It's still in beta and I recommend you to try it out just to see if you like the idea =p.

I actually considered making one where the champions are mecha-pilots and the minions are foot soldiers in a territorial control-style setup . . . . but I wouldn't be able to afford public servers for that kind of audience. :<

Soldier Front 2 has something called Hero Mode which is pretty much a first person MOBA, just with very limited amount of abilities

You would have to bump up the FOV to ludicrous levels so that the field would be visible, but it is probably viable.

I'd definitely give it a try. Make sure there is an fov slider though.

SMITE

A first person MOBA would be fairly difficult, I think. The first issue is that the viewpoint will restrict the player's intel on the battlefield. Even if you devise a good beacon/UI system to keep the player updated on various happenings, their awareness will be directional and limited (more-so than from a third person perspective). The second issue would be pacing, as it seems that MOBA games generally rely on a slower time-to-kill to allow for players to be more strategic and cunning, and to reduce the aspect of twitch-gaming. FPS games tend to operate on an overarching twitch-gaming theme, so you will have to find a balance of mechanics and weapons that finds a 'sweet spot' between twitch combat and strategic combat, while keeping the viewpoint in mind.

There is also the "wiffle" factor that doesn't sit very well in an FPS manner. By wiffle factor, I mean that you just get to watch your character forever swinging their weapon around or sinking entire clips of ammo into the enemy only to watch their health bar move around (with little in the way of feedback from the enemy model). It's tolerable in a viewpoint detached from the thick of combat, but in an FPS game when you're down there face-to-face, it would just seem like your target is sponging everything you throw at them. It's not so bad if you're winning because you get the satisfaction of the kill, but a losing team can grow disheartened even faster due to that 'wiffling'. Especially if your game has a melee element. Frustration is a biiiig factor in MOBA games after all. Consider the wiffle in Skyrim, too. Any melee player is familiar with having to flail their arms forever at opponents to make them fall down, with minimal feedback.

Download and play Super Monday Night Combat until you're fairly familiar with the maps, and you should get a good idea of the many ways your design can go wrong (and interesting ways it can go right).

I personally wouldn't like it. Stop making MOBAs! D:

Actually, someone did DOTA mod in minecraft, as u know u got FPP there so maybe try this ? :)

titan fall, just maybe?

FORGE?

Smite is something somewhat similar to what you want. It's not first person, yes, but it's still better than MOBAs with view from top. IMO Dota, LoL or whatever can't beat Smite at this. It's so much more fun...

First person means that you are controlling every single movement and motion of your character just like in the FPS and some RPG games,but you buy items and play on lanes like in every MOBA,just the view angle is different...I doubt that I will play such a game,but who knows,first we need to get such a game developed and then give opinions ;)

Have you tried Smite? http://www.hirezstudios.com/smitegame/home
It's a third person Moba, with aiming on everything including auto attacks.

Archeblade Is like that, but it's 3rd-person... and it's closer to an action-fighter with MOBA elements... but it's fun, and free.

Thanks for Lichdom.