JM, you're correct in that Korea wasnt as known as WWII or supported. Hence it's lack of recollection by the common person. And this putting it very lightly.
As for sims, I really cant remember anything but "MiG Alley" from back in the 90s. It was nice, but suffered from many bugs that werent ironed out. That I recall anyhow. And it was limited to USAF vs NK only. Again, IIRC. The other sims were mods of exisiting sims. CFS2 and SF2 especially.
But, if you think about how many countries actually participated, you could market it to a large audience. And again, the bridge from props to jets would appeal to a wide market if done right. CV ops, night fighters, CAS, etc... Some would be simply repaints as the RoK, RAAF and South Africans also used them. That would be a first.
The key would be to actually focus on one thing and move from there. At least with the F-86 and MiG-15 coming along, a stand-in M/P server that was set up for that era could be achieved. F-51s and Sabres as a minimum until the others catch up. Just an idea I know, but you have to start somewhere.