Depending on the price, I think a lot of people would like to see variations of this case boost is working on. I personally would like to see it with a 7bit layout left of the main board (delete/arrow keys), though that's not what I'm using it for (Macros ftw). I don't really like the Winkeyless board, but I could manage (though I would want the menu key. I like the menu key for spell-checking while I'l typing something.)
Overall, I think this would be very cool, and I hope that this will come in at a price even budget Phantom builders can afford (IE less than a Filco Tenkeyless.) I also hope your plate design is basically the original Phantom's with some improvements if it's going to be built in.
I just want the plate be customizable (IE one for ANSI 1.25x mods, one for ANSI 1.50x mods, etc)
This is what I'm hoping for in the case, so I think having 4 variations (since you said "Only Winkeyless and 86-key) 2 without the 5 extra keys above the inverted-t shape and 2 with would make people happy (well, It would at least make ME happy.
<sarcasm> since I'm the only one that matters in this forum </sarcasm>
EDIT: Changed wording to sound less like I'm milling it and don't know what I'm getting/to sound less bossy