Rant: The protagonist was genuinely more interesting as a completely normal guy if only because he actually acted with some degree of confidence around his interest, and he didn't have the cringey setting of idol worship and skirt chasing by joining the club just for Shirogane. At least before, he just fell in love normally with a girl by spending time together, rather than deciding to pretend he cared about the club to get closer to a girl he knows nothing about. And why the setting of her being so perfect looking and having tons of guys confess to her? It made more sense for people to be a bit put off by the mask, not obsessed with seeing her eyes and (god forbid, the sexuality of it) her cheekbones.
Then a bunch of extra ecchi comedy and scenes were added? Like, the original had some 'ecchi', but it was normal stuff, like the guy thinking she looks great in a swimsuit and them both being embarrassed when she is pushed into his lap. A little forced? Sure. But way more natural and generally relatable than this. How many guys got flustered over being close to their crush in swimwear? I'd bet more than a few. How many got trapped in a locker with them and had to pull on their skirt in order to avoid being labeled a pervert for doing a perfectly normal cleaning job? Anyone outside of comics? Anyone at all?
And why the idol setting at all, honestly? The mask was amusing enough of a setting on it's own, and slice of life was a much better fit for the themes of the story than generic shounen romance with idols and secret identities.
The new side characters with more personality aren't necessarily a bad thing, but why not just add them as characters to the already solid SoL setting? Are they gunning for a 100+ chapter run? If so, this honestly doesn't look like a good start to me. No amount of side character mild amusement can make up for worse main characters than the original design.
Rant over, apparently I felt more strongly about this than even I expected. Maybe just general disappointment that magazine publishing editors don't seem to have learned anything from the popularity of twitter shorts and wholesome comics the last few years.