I'd like to see the full spectrum honestly.
I mean lets say they do play better with lga1700 cpus period, then perhaps the 12400f would be an excellent budget choice, you could build a quite capable pc for fairly cheap. Perhaps put some used parts in there, idk. Use ddr4 if you are really tight. Buy the cheapest case that comes with fans and a 660 or 760 mobo, wherever you can find a deal. Point is if these two play well together you could make a very cheap capable PC.
Then we could go to something more middleground if the person is on budget now but maybe will have some money later and then can upgrade to any number of GPUs.
Then I just want to see the high end... well kinda for personal reasons, I might buy one if it ever comes down to market price, to 1) help intel in its time of need, and 2) to have a backup GPU and a new toy to play around with.
But yeah thats all if it goes well, in reality, it really could be either extreme or somewhere in the middle. Maybe it plays nice with all of them. Maybe it has a moderate-severe penalty across the board. I mean I know my 14700kf is nowhere near the 9800x3d in gaming, thats no secret. But I want to know I can use all its power if I buy it. Its still data I want to know. I mean intel likely worked on these and tested these primarily on intel chips.
So yeah, I would really like to know.
Anyway I'm sure we'll find out eventually....