Seth Milchick is one of Severance's "most important characters" according to the showrunner, but originally he was a bit part until Tramell Tillman showed up
You’re completely ignoring the subtext of Milchick, a Black man who evidently gets disadvantaged at work due to his skin color, using his power as the floor manager to choose a marching band as the method of celebration for their achievement. It directly ties into his season-long arc.
Just because it makes sense with one character’s arc, doesn’t meant it makes sense in the broader context of the show.
There are lots of ways a writer could have written the conclusion to that character arc for Milchick that didn’t require suddenly establishing not just a full department, but the biggest department we’ve seen at the company by far, consisting entirely of marching band players that are apparently very practiced.
Just because it makes sense with one character’s arc, doesn’t meant it makes sense in the broader context of the show.
There are lots of ways a writer could have written the conclusion to that character arc for Milchick that didn’t require suddenly establishing not just a full department, but the biggest department we’ve seen at the company by far, consisting entirely of marching band players that are apparently very practiced.