Zardnaar
Legend
Yup. Another option is carousing for XP (numerous versions on various OSR blogs over the past 15-odd years), and of course the original expectation was that PCs were going to be spending a bunch on expert Specialists who cost lots of cash every month (X21), Mercenaries (X22) for domain play, and a bunch of it would eventually be going to build a castle or other stronghold at name level (X52)
Yup. This is part of why Old School Essentials Advanced Edition is so popular. It takes all those extra spells and monsters and magic items B/X is missing and tastefully re-writes/edits them into the B/X format. Of course you can always do that work yourself pretty easily, too. For my taste a lot of the AD&D spell descriptions get a little fiddly and excessive, but I've imported them and cut them down as needed.
OSE advanced 2E hack would be sweet for me.