I miss it too. That was a great combat sim. Lots of fun. Unfortunatley the Korean war has been overlooked in favor of WW2 & Modern jets with fire and forget missles. Jets with guns are always my favorite.
I understand War Thunder has the F-86 and Migs, but I know very little about it. I think those planes need to be unlocked and its an MMO, so I never really played with it.
DCS is going to have an F86 released this month, but I dont know if there will be a Mig down the road or an AI Mig to go with it. Eventually, this may make a close Mig Alley like sim.
I think there is a Korean war mod or addon for Strike Fighters 2 which gives you the F-86 and Korean war era planes. Haven't tried it, but its on my list of sims to try.
Rob