Wouldn't that produce the opposite effect? The whole reason Lvl scaling got in, was because things became too easy in Morrowind.
Not if top-level enemies are designed to be a challenge for top-level PCs and if getting god-like loot isn't so easy. Power-gaming also doesn't help.
You should basically have to flee from or avoid enemies that are too hard for you like they are the plague when you are low level, and at mid-level a single-high level enemy should be a god-like epic boss fight. At max levels, a single high-level enemy should be a bit harder to take down than low level enemies were when you were low level. In other words, if you see a Gloom Wraith equivalent when you are levels 1-15 (and you should be able to) run like hell. If you see one when you are levels 15-30, maybe run like hell, or if you are good and its one on one, prepare for quite a fight, if you see one at levels 30-50 it'll be a moderate test of your skill, and if you see 2 or 3 of them at once at level 50, it'll still be a deadly situation. It's not an easy thing to balance, but good things are often not easy. The numbers of the levels aren't exact in my example, just numbers for the sake of numbers don't get bogged down on the exact level ranges.