The problem is, will Euphoria work with the monsters? Like the spiders and bears? They are way different from the Euphoria engine. I can't remember seeing the horses in Red Dead Redemption working with the Euphoria engine. They didn't react as normal as people. (Although I'm not sure if it are the horses in RDR, I could by mixing up two games.) And another thing, GTA IV and RDR weren't in first person. I don't know how it will look like when you play in first person and get knocked down.

I vote no on euphoria.

It's not that it's a bad engine, just that I think TESV would be better off to go with a more advanced engine. The limits of euphoria (as well as present engines, even with F:NV) just really limit gameplay. It desperately needs a new engine to really take that next step as a game, instead of more of the same. (Again, not that the same is bad... but we can do so much better).

Euphoria is not a game engine, my friend, it is a physics related engine to control how ragdolls respond to forces.

So Bethesda could use Euphoria and still have their super cool new engine (which, if you didn't already know, and it doesn't seem that you do, Bethesda apparently has a super cool new engine they tooled up that is "almost like next gen" according to Todd Howard).

Is it an interesting addition? Yes, I really loved the Euphoria engine in Red Dead and GTA4, it gives a better sense of immersion.

Will it improve the gameplay? Maybe, most likely no. Implementing it would require a lot of sacrifices in terms of gameplay, and there would be a bunch of glitches everywhere.

Will it work? No, even if it supports Gamebryo or no, it won't work well, it will be most likely full of glitches, and will cripple the game in many ways.

Can it be implemented in TESV at this stage of production? No, the game is most likely into the final stages of development (If we consider a Fall 2011 release) , delaying the game to add it would also not be worthy.

Will it ever be in a Bethesda game? Most likely no. IMO, I don't think it suits their type.

Euphoria would solve all their problems with Oblivion's combat system. Rather than making every single attack hit your opponent but only do minimal damage, and expect the player to accept that he has to cleave a goblin's flesh 50 times with his sword before it dies (if the sword isn't a primary skill for his character), Euphoria could have an enemy 'block' or 'dodge' every attack that isn't the killing blow, but still reduce it's health meter. The blocks and parries would look last-second and clunky, compared to an actual block that was initiated with the right-click button (on PC), and the dodges would be near-misses, rather than real dodges. You could also have attacks bounce off of heavy armour with this system too. Only the final attack would score a hit, and kill the enemy as a result.

Weak enemies would die in one or two hits. Average enemies in five or six. And boss mobs would live up to their reputation by giving you a grueling and skilled fight, full of blocks, parries, and dodges, before you finally get that satisfaction of running them through with your blade. No more slash, slash, slash, slash, slash, slash, slash, slash, why aren't you dying, why aren't you dying, why aren't you dying, die, die, die, die, DIE! Much more immersive, and so long as they balance the health meters correctly, it would be really satisfying when that killing blow lands. Like you really worked for it.

You are too narrow minded. I'm pretty sure I heard that Bethesda is developing a whole new engine for TES V. There are bugs in every system, they can be worked out. Gamebryo svcks, I'm pretty sure their dumping it.

I think you are too open-minded, to the point of just accepting anything that appeals to you. Silvade is correct, it doesn't fit in Beth's product line. They're not dumping Gamebryo, they've rebuilt it to become more modular and thus easier to adapt/fix.