I wonder how many people use a published game like BFRPG or Swords & Wizardry mostly as-is, with maybe a few house rules. Or how many take one of the OGL texts and make their own homebrew game that they and their friends use, without actually publishing said game?
I'm mostly into BFRPG at this point, with my own houserules supplementing it. I'm kinda toying with just making a big rulebook, with all my houserules just folded in, so everything is in one book. I wouldn't publish it, as I personally think the OSR field is already over-crowded, but I'd have a couple paper copies for use at the table.
By doing this, I'd also be free to make some more extreme rules changes, that I didn't include in Sword & Board, as I wanted that book to be more supplemental to the main ruleset.