Why for J2M? Been brought up / whined about too much? 
Just always had an interest in the J2M, and would like to see it in game some day. The other two are great scenario planeset hole-fillers. Not to be construed as a whine, just a playful poke at the wisdom of the masses vs HTC's possible choices. But maybe they would've put in the Meteor, who can say?
I do like the community participation in choosing the next plane though. Its a great way to make the players feel involved in the game's development, and if the a/c doesn't work out as its hoped or expected to, we've only ourselves to blame.
