Well yeah, many things get a vote here. When we are talking about actual tactical use, there are considerations that sometimes trump "the best" materials (or construction techniques). You are balancing durability, strength, security, cost against light weight, low visibility, quick access, etc.
There is some interesting stuff going on with "laminated" materials. Combining one layer for strength, and another for camo/ low viz. The Brits did some interesting work with hypolon and cordura, but it's pretty heavy. TYR has done some stuff with aramids and cordura, but it is expensive. I talked with a guy earlier this year who is R&Ding some new stuff in this regard and I look forward to what comes out. I think this blending of materials is a very viable approach. I think obviously if one layer is used for strength, then the camo layer can be much lighter. So 500d even 240D cordura could really come into it's own when combined with another material.
Using hypolon or equivalent, where possible, to replace much webbing makes a lot of sense. Especially for molle webbing, and pouch attachment apps, where it's mostly hidden. But in high viz areas, maybe not so much. A good buddy just designed a nice PC where he used webbing vs hypolon, in a shoulder strap app. This makes a lot of sense to me.
An additional consideration. When you push the state of the art out there, you get some effect on durability. The guys who use the newer, light weight gear are issued new kit every deployment cycle. So unless you budget for this yourself, you are going to be bumming. TNSTAAFL.
So yeah there are interesting things going on out there, but this stuff doesn't happen in a vacuum. You have to consider end use (or end user) as well.