I think the problem here is, to put it bluntly, there's only so much you can do within the paradigm of OSR (or classic D&D from which it claims to draw its inspiration). The reason we went on to other things is really pretty simple, it was a very niche game concept that did a pretty small number of things reasonably well, and was frankly terrible for everything else! This is why 1e trended into trad and 2e was explicitly trad.
I mean, I'm sure there's SOME room in there for doing stuff that wasn't completely explored (or is at least forgotten today) back in the day. Still, a lot of what I see that is OSR just strikes me as "you could do this better another way." The upshot being, all these games are going to be covering kinda the same ground, albeit each with its unique flavor. Most likely if you have read 4 or 5 of these games, the rest are going to sound fairly familiar!
Of course, the other part being, once you break out of the formula, you kinda stop being OSR, so its a bit of a self-limiting RPG genre.