I find speed alone would be a game changer for current models. I hardly find any task anymore that the current frontier models can't do with max reasoning after several rounds of feedback (provided sufficient instruction and the right harness). But waiting an hour or more for reasoning to finish is getting really cumbersome. If they could do the same in seconds (and for cheap of course), I'm pretty sure we'd pretty soon see major software companies pop up that are run by a single human.
I've let it research and implement pretty complex stuff for my 3d engine. Like a realtime volumetric cloud rendering solution. The kind of stuff you can do yourself, but it would probably take weeks, if not months. I spent quite a bit discussing the design with it, knowing some details of how it should work from game dev conference talks. Once we agreed on a design and implementation plan with key steps and intermediaries, i just said "now implement it" and it happily designed algorithms, wrote and ran tests, generated and looked at screenshots and basically did everything you would expect from a really senior engine programmer for more than an hour of wall time. The end result was something that worked amazingly well after testing it myself and suggesting minor corrections that were my fault for not specifying them in the first place.
