From what I heard the problem with these solo concerts are that there are so many covers they perform, and that they probably don't want to pay those artists for the rights to release them on BD. Momoka's could be a little more likely, because she performed more of her original/momoclo tunes. Or maybe they'll release a compilation of all the solo concerts with the Momoclo and solo songs on. But a full release of any of the concerts is not super likely to happen imo.
I know that it's too early for a release but maybe there was a mention of it somewhere. I was curious mainly because the camera work on the bits from LoGirl and Momoclo_Chan looked like they had a release-style setup. Not just a staff member with a smartphone so to speak
November 26 Ariyasu Momoka [Event] Solo Concert "Kokoro no Senritsu ~Fell a heartbeat~ Vol.0.5" Setlist 01, feel a heartbeat 02, Catch Up 03, Another story 04, Chiisaki Mono(Hayashi Asuka cover) 05, Peace loving people(Ayaka cover) 06, Seikan Hikou(Ranka Lee cover) 07, words of the mind 08, Kono Uta 09, Shiroi Kaze 10, Pedal 11, Hadaka 12, Mirai e Susume 13, TO BE WITH YOU(MR.BIG cover) 14, Your Song(ELTON JOHN cover) 15, Kokoro no Senritsu 16, Chiisa na Yuuki 17, Aisaretaku te 18, Kyouiku 19, Gorilla Punch 20, Drive Drive Encore 21, Kuroi Shumatsu(drums:Momoka) 22, Hamster 23, Arigatou no Present
Popularity wise, yeah, they could pull it off. I'm more thinking of what I think they would actually want to do. Both Kanako and Shiori seem to be branching out into the acting industry. Aarin isn't as clear, but I think (and I've heard many others say the same) that she may end up hosting talk shows and the like. Reni I honestly have no idea. But Momoka is the only one actively involved with writing her solo songs, and from the clips of the previous solo concerts you could Momoka was in a different league performance wise. Aarin is more leaning towards being involved with production of the concerts (most recently the US tour, but I believe she's been involved with other concerts as well).
This is pure speculation of course. I have no idea what's really going to happen in the future, but that's my guess.
I think Momoka has the ambition for a solo career in music
I can imagine Shiorin and Kanako moving into acting instead A-rin maybe music as well but I'm not sure she has the substance once she leaves idol age. For whatever reason I see her as a mom more than the others :) Reni I have no idea whatsoever. I could imagine her going into management
But hopefully that's still some years in the future