I doubt it will be cheaper than the current controller, so even at $3500, I may have to pass. The sad thing is that there may be less pull to get resync fixes in. In recent releases, both Bullet to the Head and Pompeii don't sync for me. Add to that the 5 or 6 older releases that I have that don't sync and a handful of DVD to BD that I am waiting on. Keep in mind, most of these are rentals, so I won't be sending off anything to get fixed.
My HT budget right now is for Atmos (I am banking on the hope Atmos will sync, :O) and a new PJ & Screen. Any D-Box upgrades right now would be to add more seating with MFX.
Now anything in the sub $1500 range and I will bite.