Probably not listening to the angry fans at all. Just enraging them less XD
Either that or they're planning something to fuel the fire more...like the official limited edition having them smack dab in the middle of the front of the holographic game cover
No, I can bet my arse they won't.
iM@S's promotion is always about virtual girls with unnecessary information like BWH and all that. While adding male rivals is something, using them extensively in promotions is really something else.
I read a blog of someone who came to 5th anniversary concert, and he was pretty sure iM@S's female : male fan comparison is about 1 : 100. Announcing Jupiter would rise the excitement of female fans, featuring them all the time won't excite male fans, and maybe female fans as well.
You don't actually have anything to do with Jupiter (okay, maybe kicking their arses on stage counts as "something"), emphasizing characters who you might not meet once an hour is not a good strategy I say.
Lastly, in promotions all featured characters are main characters, not side characters.
Well, except Nintendo's promotions I guess, what with so many characters that they have, but they have different target audience