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Considering there is a large, robust OSR crowd out there, I'm going to go out on a limb here and say that the AD&D/OD&D crowd is being well served. They don't need to "bend the 3e CC sideways". The OSR has been out there for what, nearly twenty years now? If it was going to be an issue, one would think that it would have been a problem at some point before now.
3e has Pathfinder, never minding that there is still an absolute mountain of 3e material out there. More than you could ever play in your lifetime.
4e? Ok, fair enough. I'd love to see a 4e open treatment. But, again, not holding my breath.
But, again, why on earth would WotC want to do this? The entire point of the OGL and now CC is so WotC doesn't HAVE to do this sort of thing. There are so many D&D adjacent games on the market, right now, that you could probably play a different system every day for a year and still not have played them all.
And that's just the D&D family of games. Never minding the other stuff out there. You want full on Steampunk using the 5e rules? Well, off the top of my head, if only we knew a publisher around here that has an entire setting devoted to a huge steampunk adventure that was written for 3e, then updated for 4e then updated AGAIN for 5e. Dunno where I might find something like that...