It seems many people want a "hardcoe mode". I personally don't think it does anything for hardcoe players (my definition of "hardcoe" is different then most's, as I see it as more of a Faction). I have also noticed that modders have already made mods that do the exact same sort of thing in both Morrowind and Oblivion. chances are pretty much 100% that they will do same to Skyrim. It will just take time, but it will happen.
There is a limit to how much can be put on a disc. Even if its just kilobytes, a "hardcoe mode" will take up space. Space that could be used to put in a new gameplay mechanic that only Bethesda could do (yes those exist, even the construction set has its limits).
So ask yourself...what do you want.
PS: I put the chance that Bethesda is way ahead of me at 75%.