If skyrim was more realistic.....
1. No dragons
2. Humans are the only human level intelligent species
3. Can't use magic.
4. Only allowed to carry a few potions, and the more equipment or potions you have, the slower you become, easier to become over-encumbered. Your amount of how much you can carry will not increase as you increase lvls.
5. No vampires or werewolves. If there are any intelligent creatures that attack villeges or try to eat people, they can be cannibals.
6. If you die....that's it for said character. You can still save your progress, however if said character is killed in anyway, all save slots for said character can not be accessed. You would have to make a new character.
Would you play a more realistic game like this?
Of course if there are no dragons, then it kind of destroys the main quest. However some other quest could replace it? Perhaps stop some Thalmor invasion? Sure these Thalmor wouldn't be elves....since elves are against realisim, instead the Thalmor can me made up of another race of Man, who's skin is yellowish/golden color, and despise the other human races (nord, imperial, redguard) for some reason.
It would svck. Yes TES has a lot of realism, in that it creates a sense of place to were, if you were dropped in into Nirn, it would feel real; but making TES super-ultra realistic, in a way that you are describing, would totally go against what TES stands for, and not even adding in all of the fans who would not buy the game at all.