I can't believe people really think deadric and glass will be the best armor available. It's a new installment people! I doubt they will even be in the high end scale...
And had you said that when Oblivion was coming out, you would have been wrong.
I'm in favor of two supreme top-tier armors, one heavy and one light. That said, the heavy should still have noticeably more defense in exchange for weight. If you make two top-tier heavy armors, one "good" and one "evil," then you'd need to make a third for morally-gray characters. Because, as many people on this forum point out, moral dichotomies are bland.
Whether or not those armors are daedric and glass, however, is another story. I think there ought to be several just-under-top-tier armors for each armor skill, and I think each of those should have its own pros and cons. But if there are multiple "best" armors, then finding them won't be as special. Remember that for every set of "best" armor, there are that many more "best" pieces of armor to find, and "best" armor becomes less rare. There could still only be one of each piece, but you'd still have two or three as many items that, when you find them, you say to yourself, "I can't go up from here."
So I'd prefer a system in which as armor gets better, it gets rarer and
stays rarer. Iron should always be much more common than dwarven. I'd prefer several almost-godly armors in each armor skill, with three or four sets each. And I'd prefer one godly heavy and light armor, one set each. I'd prefer that one piece from each set be owned by an NPC, similar to Divayth Fyr in Morrowind. And most importantly, I'd prefer the remaining pieces to be placed in high level dungeons
at random with every new game. Not even necessarily in boss chests. No more going to Dren Plantation from the get-go. You'd have to explore your heart out every time. And then, when you do find a piece, it
means something to you.
At least, that's how I would do it.