My "fixed" 3.5 has houserules from all kinds of sources. It uses E6. It has Pathfinder archetypes and CMB/CMD. It combines Move Silently and Hide, as well as combining Listen and Spot. It removes a lot of classes that I don't like, and replaces them with others from third party sources or elsewhere. It has action points, with a few houserules of my own and from Trailblazer to expand how they work. Magic is more Lovecraftian, and is based on the Incantations rules from Unearthed Arcana and Urban Arcana. It has a sanity mechanic, but I like the more "native to d20" version found in Freeport than I do the "native to BRP/d%" system included in d20 Cthulhu and Unearthed Arcana. It has the Heal Skill, but it really works more like the Treat Injury skill from d20 Modern. It's got a class/level based Defense bonus to AC like... well, like every d20 game except D&D. It's got a chase system (mine is borrowed from Five Fingers; written by Wolfgang Baur.) I've made a minor change to the way BAB and iterative attacks work to help facilitate more mobile, swashbuckling combat rather than stand still and bang on each other because you get two attacks that way. I've got almost all custom races, some of them with mechanics that are heavily tweaked by me, only one of which (besides human) is actually in print anywhere.
I'm not likely to really pick up reprints of the books, although I might get another PHB just because frankly I could use one. With the SRD in place, and as many houserules I have, I'm better off crafting my own PDF with copy and paste and edit, frankly, out of the SRD.
But the point, I think, is that WotC recognizes that there's a lot of folks that never stopped playing 3.5, and also didn't necessarily migrate to Pathfinder or any other system. While maybe reprints of books these guys probably already have isn't the best way to sell to them again, I dunno, maybe it is a good way to reach out to them. One way or another, I'm sure WotC wants to reach them again.