Yes, non-convention goers, the topic did come up in the Dallas Q&A session.
No, it didn't start as a question from a rabid fan in the back row -- it showed up in HTs and Pyro's discussion of the kind of "garage projects" they've tinkered with and not completed!
I think it was Pyro who said they have roughed in the flight models of the Mig17 and F86, and that they weren't all that tough to put together. They've even included WW2 1946 imaginary setups in their internal list of "gee, wouldn't it be cool if" projects.
Again, the bottom line for the discussion was that HTC feels the workload of CT drew away from their core business in the arenas. They look at developing new planes the same way they look at advertising -- a necessary expense that gives a return even though it's devilishly hard to track the returns. As far as they're concerned it didn't seem to matter whether we're talking about the Saber or the Brewster, hot rod or "boutique" plane like the Brewster -- new stuff is part of the package.
So when the time comes, it wouldn't be all that surprising to see some interesting variations on the standard arena setups.