And lets not forget there is the "waiting to be developed" Terminal F that is currently a parking garage.
Given that AA are bringing online quite a few 777's with real international F, combined with the AA and US consummation, QF & EK 380's coming online, then BA upgrades to the 380, CX extend their service to DFW, KE already have an F service, we may well see a dedicated International Terminal in the future, whether it be a modified D or an brand new F.
I predict that DFW is a place to watch. From what I have seen (and I have seen way too much of DFW in the last few years), this is an airport that has space, has watched the mistakes of others and plans itself to be a very efficient hub.
Sure that hub assumes you are within the OW ecosystem (excluding KE). However, within the OW ecosystem, it is a shining star.