exactly...i think a lot of people don't realize that the main elements of the classic Batman suit were established back in the 40's and 50's, when superhero and fantasy costume design was still in it's infancy. i guarantee that if Batman were never thought of until recently, his initial appearance would be DRASTICALLY different than what it was back in 1939.
I'm not sure the difference would be that severe. Naturally, it would be different, but the conventions of superhero design are largely the same today as they were in the 30's and 40's. Like any art, the modern approach is built on
classic approach, and although it has certainly has evolved and refined itself, it is much the same as it ever was.
Instead of basing the designs on wrestlers and strongmen, as was done originally, we see designs that are more militaristic, or soldier-based. This seems like a big change, but it hasn't been, because the conventions of traditional superhero design have remained. If you compare the classic Captain America with the Ultimate version, he's mostly the same save for that shift from strongman to soldier. All it took was a few detail changes to effect this shift, and suddenly you've got a modern Captain America. He didn't need a million armour plates to do it.
Batman can be updated in much the same way. Material change is a given, but a modern design does not necessitate piles of armour plates, nor does it necessitate black. Some things are going to need to change, obviously--the shift from wrestler-based to soldier-based means you might swap the briefs for harness straps, or just ditch them entirely, as an example--but the alterations required are not that severe, and certainly not as severe as you see in the TDK costume.
The TDK suit is good enough, in my opinion, but the shift is too much for my tastes. I understand people liking it, but I disagree with the idea that such this degree of change was necessary. The modern update to Batman that I imagine is not about smothering him in armour plates, but taking him in the same direction as Ultimate Captain America. This is the sort of look you see in
Bunk's stuff.