Seems to me adaptive refreshrate is one of those technologies that'll be taken for granted as standard in the future, but right now needs to be carefully implemented.
The change needed is for all LCD panels produced to be capable of variable refresh. Right now, most aren't and the world will have to wait for LG, AUO, etc to deplete inventory of their older panels before the new tech can become ubiquitous.
I don't see much of a future for G-Sync, but I'm sure Nvidia would happily agree, and have released it anyway for those who care and say "Here it is, right now, but you pay for it". I applaud nvidia for this approach, it's how things improve; it made AMD respond with Freesync and will ultimately result in all panels fundamentally using adaptive refresh rates.
AMD may look like the good guys right now, but really it's nvidia who'll later be able to say "You're welcome".![]()
Same could be said about Mantle= DX12, Vulkan, Metal.