It seems the biggest challenge that BF has is the common prejudice against small wheels. Unfortunately a lot of people think the bike looks silly and/or assume the ride quality is poor without giving it a chance.
I think perhaps BF should develop a 24" folder because to me that wheel size looks more like a smallish, full size wheel. Bike Friday could then target a large market of people who have a bias against 20" wheels, who don't necessarily want a travel bike nor a super compact fold, but would love to have a road bike that could fit in the trunk of their car or on a commuter train.
You might say that Airnimal covers this market niche. I think Airnimals are interesting, but by having to remove the front wheel to fold and also being aluminum are both deal breakers for me. BF has done such a good job with their 20" bikes, I'd think they would come up with a stellar 24" folder.
There would be the drawback that it would confuse the BF motto. It would be silly to say, "Performance, that packs, most of the time*" (* for 20" folders) I'm sure they would adapt tho. Also tires are more limited in this size, but for me, not a deal breaker.
Personally I'd love to use the 20" NWT for traveling, and a 24" Pocket Rocket at home.
So, good idea? bad idea?