Thanks.
Yep, campaign historic or not, I think (in general) flags finish units.
Though, I'm not doing one for the British 10th hussars (up next) - actually thinking about it, quite a lot of my hussar units (mostly SYW) don't have flags; no flags for hussars must be a me thing.
I guess I mainly love the splendour of Napoleonics: I didn't do many French in campaign dress for similar reasons. Probably the reason I also painted so many 'funny' infantry units for my French Peninsular army (2 Swiss, 2 Nassau, 2 Poles, 1 Irish, 1 Du Midi, 2 Garde de Paris in white, 1 Hannovrienne, out of 28 infantry total).
I like pretty, c'est la vie.