There’s a greater thread on theRPGSite where people are converting classes, races, and monsters from (mainly) WOTC D&D to old school (TSR) editions of D&D is this thread: Oldschool Conversions of Post-Oldschool Material. There is some good (if untested) stuff in this thread. From the first couple of pages of messages: The Warlord (Fighter Subclass); Ape, Giant, Carnivorous; Serpent Anathema; Harrier (Fighter Subclass); Bladewing; Warforged (race); Arcadian Avenger; Bladerager Troll; Sithilar; Dragonborn (race); and Tiefling (race). There are four additional pages of posted material — and growing. There are lots of good ideas here.