Personally I am voting for a tenkeyless; there are already two 60% options on the market - it would be nice for a change to have something different.
The Matias one is pretty bad though, if you ask me. The layout is wonky and caps will be totally proprietary to that keyboard, making it difficult to do any real customization. And with the upcoming SP Alps cap GB...
The V60 is interesting, but it's $120 for a board I'd be swapping the switches on and doesn't have the same amount of customization as Gon's. Don't get me wrong, it is nice to have an option that isn't a Ducky, but it still needs some work to really be worth the $120 to me.
Also, there's already a nice Korean Alps TKL on the market right now, the Kingsaver. I know I'm partial toward 60% boards, so of course I'll be pushing for one, but I don't really see it as a niche that's full yet since the 60% options out there are pretty wanting and there's already an awesome TKL Alps board out there.
The only TKL or full board I'd really be interested in is a flipped one with a left hand side cluster.