Most people have the fixation that going faster is more fun, meaning they'll run a 1000hp room with racing softs and everyone's going a million miles a second but none of them have the skill to actually race at that level.
400pp races with comfort soft are almost always really close and exciting. You wouldn't think running a lap of the Nordschleife with slow cars would be fun but try it with 6 other cars less than a metre from you and it gets really intense.
As others have said, if you can't find a room with regulations you like, host your own. If no-one joins.. well that's pretty boring (been there many times) but even running hotlaps all alone is better than joining some 600pp bangerfest.