[Snowflakian]

I'm not sure about BAF, they've done pretty well with GBP, and the bulkier figures as is so far.

I wouldn't mind seeing Build-a-vehicle though, like an all ghost rider wave that makes his bike, with a vengence figure or ketch figure that shanges the bike front to vengence's or Ketch's. Not sure if this would work for the modern fantasticars, but the classic pipes one could be done this way too. The waves could focus on relation to the theme too. (Ghost Rider characters for GR's BAF, Fantastic 4 characters and variants for theirs.) That way if you want the BAV, you'll be getting the wave anyway and it'll reflect that wave. Like an all avengers wave that builds Hawkeye's skycycle.

Other than that, I'd prefer a more build-a-scene way to do it like the YJ figures are doing the hall of justice. That'd be rocking, but for varieties sake, make it something more interchangeable and interlocking like sidewalks with building walls and ways to make them dip back like alleys, or street pieces. That way with every figure you can add to your dio, but you can also trade with friends to get the pieces you want if you get doubles. So maybe even blind pack them and randomize them to allow for that. Unless the wave is focusing on something like the bugle. Then it'd have to be each piece to a certain figure.

If they must do a BAF for MU though. I'd say right off the bat they should do Ultimate Nimrod of the new Ultimate X-Men and have that wave be Ultimate Kitty Pryde/Shroud, New Ultimate Spiderman, Ultimate Thor, Ultimate Wolverine, the current Ultimate Ironman, Ultimate Cable, and Ultimate Jean Grey. But then again, I just want that new Ultimate Nimrod as a figure like yesterday.