I'm to the point now where much of the working outline is ready to be written on a project. I view it as an OSR game, though it's certainly not a retroclone. It's the game I wish I would have had as a beginner all those years ago, I reckon. The idea was to turn the collection of mismatched, not-always-fully-considered systems and mechanics into a more cohesive collection of systems.
I'm hashing out the details of many bits, and find that I want some feedback on the bits as I consider them before writing them up for playtesting. I figure this could be a good place for that, as you folks are also old school players; I don't expect any of you to ask why I don't do something the way PbtA does.

So, the game is a fantasy rpg. It will offer basic rules and advanced rules. The basic rules are intended to be very much a beginners' set, though I expect some groups would be quite happy to use them for regular, ongoing play. The rules are intended as toolsets for GMs to use, and the most basic toolset found in the basic rules is sufficient for ongoing play.
On the face of it, much of what can be found in the Oed/BX/AD&D rules is present: classes, levels, hp, etc. The details of those elements has changed, though not in a fashion that makes them unrecognizable. It should feel quite familiar in many ways to old school players.
I'll ask about different topics in individual messages in the thread. I believe we'll begin with questions about classes.