In addition to the usual, "MC is not a real villainess" disappointment I'm also disappointed that MC isn't using public opinion for anything.
I looked at MC's previous identity/actions: running a talent agency, manufacturing a scandal for a rival actress, sending rival idols to jail, cyber bullying an idol, and I figured her main skill set was PR and using public opinion to get concrete benefits and that that was how she'd deal with her opponents.
Instead she's just generically competent, and she just has the approval of a bunch of background nobles from the start but never does anything with it.
It sucks because a lot of villainess stories are like this one in that most of the noble student body disapproves of the prince and heroine but nothing ever comes of it and it'd be really cool if a story poked a hole in that and pointed out that at least some of those disapproving students are from families or factions that are powerful enough to pressure the royal family.