I think the "obvious" maybe part of what you're not seeing; that is that how many boats do you think a builder would sell if the crew had to raise a board on every tack. Its hard enough to build a boat to sell much less add that extra work to sailing it properly not to mention how many times the boards would be rammed into the wrong hole by someone "who can handle it"...
There is demonstrated proof that Asym boards work better but ask your self how many catsaiors care??? Most are not serious racers and just want to sail with as little hassle as possible.
As far as demonstrated results among the average catsailor that races a couple of times a month that is unclear.
So for the general public that you are trying to build a market share with keep it simple...just look at the wave and Hobie 14 resurgance...
thom