Is it possible? From my point of view I don't have any emotional attachment to any wheelsize. I have built a Titus fireline 29er and it is a blast to ride. It is the lightest bike I own so although it climbs fast I am not sure how much this has to do with lightness or big wheels. It corners great but likes broad wide ones. Over drops it feels fine, jumps are a little more dead feeling. I am no expert but I think I can feel it flexing on tight turns and rocky sections.
I also recently built a Nukeproof mega. I was building drops and jumps in the woods and wanted a strong fast play bike, so strong stiff frame, wheels and forks and manoverable. It plods a bit going up hill but looking at strava it is no so much slower than my other bikes. It sails through the air rather than feeling like a brick which the fireline sometimes does.
I have not tried the middle size but I am not sure what the point would be as it would loose some of the already small benefits of the bigger wheel but not be as strong or stiff as a 26 inch bike which is something that I really value.
So what are the real benefits or drawbacks of each wheelsize and 650b. Why would I want to use it?
I have noticed swapping between bikes you soon get lazy to the advantages. For example not pumping over roots and rocks as much on the 29er as you can roll over them so any advantage is quickly lost due to your own limitations. I am not really interested in marketing bs or crying over the loss of 26ers. Any honest bike designers that have played with all sizes. Is there any flywheel or gryoscopic effect from bigger wheels as I have read that there isn't but I am sure that is what I am experiencing in both positive and negative ways.
So sorry sorry for starting another wheel size thread but all the others are either mareting bs or slagging matches.