I'm definitely opposed to QTE's, for pretty much all the reasons that have already been stated (immersion breaking, distract you from the action, are just annoying to me in general). For the stealth in general I'd agree that it needs more dishonored. The real problem to me with it isn't that backstabs are too powerful its that sneaking is too easy and too simple.
As for the combat itself I'd say that it could also draw from Dishonored a bit, as well as Dark Souls. Obviously directly copying the combat from Dark Souls wouldn't work that well given the many differences between the games but I think a few things that could be pulled from it would be making different types of weapons feel different. In Skyrim the only real difference between a mace, an axe, and a sword if that they swing at slightly different speeds there isn't any sense of weight to them and they all swing exactly the same. Adding a greater variety of options in combat in general would be nice too, say parrying from Dishonored, plunging attacks ala Dark Souls (make them drop assassinations like in Dishonored if you sneak up on them, possibly gate such attacks behind a perk or something), and make power attacks for weapon types more distinctive (rather than just a heavy swing for all maybe give swords a stab for instance). I for one think it would be really cool if they took some inspiration from Dark Souls Dragon weapons for the Daedric weapons (or possibly other unique weapons as well) and give them some powerful unique effects on power attacks (say have Volendrung smash the ground and make a shockwave for instance).
I haven't played Dark Messiah so I can't comment on its combat, I have played Chivalry but I hated it (though that was in part due to constant lag, so I won't make comment on it either). I do think they could take some inspiration from Warband in terms of mounted combat, though I wasn't too impressed by that game for melee combat on foot.
The last comment I have for improving combat would be to improve the enemies and make them more varied, some enemies attacking from horseback, some enemies who attempt to hide and ambush you, enemies that act as support for other enemies, etc. Having the enemies react to damage would be nice too, make it feel more like the player is doing damage to them as opposed to the annoying damage sponges that tend to show up in Skyrim.
As for the combat itself I'd say that it could also draw from Dishonored a bit, as well as Dark Souls. Obviously directly copying the combat from Dark Souls wouldn't work that well given the many differences between the games but I think a few things that could be pulled from it would be making different types of weapons feel different. In Skyrim the only real difference between a mace, an axe, and a sword if that they swing at slightly different speeds there isn't any sense of weight to them and they all swing exactly the same. Adding a greater variety of options in combat in general would be nice too, say parrying from Dishonored, plunging attacks ala Dark Souls (make them drop assassinations like in Dishonored if you sneak up on them, possibly gate such attacks behind a perk or something), and make power attacks for weapon types more distinctive (rather than just a heavy swing for all maybe give swords a stab for instance). I for one think it would be really cool if they took some inspiration from Dark Souls Dragon weapons for the Daedric weapons (or possibly other unique weapons as well) and give them some powerful unique effects on power attacks (say have Volendrung smash the ground and make a shockwave for instance).
I haven't played Dark Messiah so I can't comment on its combat, I have played Chivalry but I hated it (though that was in part due to constant lag, so I won't make comment on it either). I do think they could take some inspiration from Warband in terms of mounted combat, though I wasn't too impressed by that game for melee combat on foot.
The last comment I have for improving combat would be to improve the enemies and make them more varied, some enemies attacking from horseback, some enemies who attempt to hide and ambush you, enemies that act as support for other enemies, etc. Having the enemies react to damage would be nice too, make it feel more like the player is doing damage to them as opposed to the annoying damage sponges that tend to show up in Skyrim.