Midrea started to be fleshed out around the time 2nd edition started onto its complete splats and from there it was modified to suit GURPS and various homebrew things. It was originally built like a secondary world using game rules rather than an RPG sandbox and as such a lot of things were left out.
Anything designed around 3x classes
Dimensional travel except to D&D type worlds
Firhom and many of the "Tera" culture cities
In addition some things like the Wastelands were added later, though they could exist just fine in Old School Midrea
The flavor was more "Thieves World+ Conan+ Faerie Tale plus a smidgen of this and that"
In some ways I think the older version was more coherent and as players didn't have the urge to play as many things, it worked out fine.
If/When I release Midrea into the wild I'll probably include an OSR version but there will be differences.
Now I'd be curious what y'all think, should I release only a 3x version, only an OSR version, a single version with 3x notes or some other kind?
The Return of Planescape? - Curious. There is a brief note on this 'countdown' at Enworld.
13 hours ago