Well then i have to say congratolations for Idoling!!! and their management for alll their hard work so far. For me OU/IG was a fair song (although not the best), with good package (cover photo, PV). At some point i see that MAMORE!!! was a better song than this, its sales proved it all. Maybe their management have to "speed-up" promotion to make it better, this is just first day, still days more.
About Idol world competition nowadays, i have to say there are a lot of surprises this year. 48-groups are no surprises, because they are already enjoy its "golden-era", maybe up to 5-years from now on. They are national idols, japan representation in terms of idols. No doubt about it. What surprise me is the rising of Momoclo & Super Girls, and comeback of Momusu. In my Perspective, Idoling!!! also rise up this year with MAMORE!!!, but compare to them (momoclo, SG, Momusu) I think they still lack of popularity.
I saw that Momoclo, SG & Momusu often shown in TV or variety, guest on popular tv-show, etc. Maybe this is crucial factor to become popular, personally and also their group. IMO Idoling just have Amimi who often seen in TV. Beside that Idoling seemed to be a "exclusive" fuji-TV group. I knew that their policy which make it hard for them to explore more. I glad that their 12th live will be stage on NHK hall. Also i glad that many of their member often show in TV/programs (Maipuru for example)
In the end, for us Idolinger!!! no other words that we have to keep support them.