AelkyrSmall aside but I think banners are a lot more interesting outside of stalemates cause they charge faster and can be used in fights that aren't always big team trades, its more than gunboats are so fucking good outside of stalemates so they only see use there.
banners definitely do not charge faster than an uber. i suppose you're talking about in an actual fight a soldier could do a lot of damage and charge it but even then by taking a team fight with a soldier who doesnt have his banner charge ready puts you at a massive disadvantage due to the lack of gunboats, while not having the "dm benefits" of a shotgun.
i played a funny season of shotgun roamer coming about a year ago now, which i honestly tried to make work, and i will tell you 110% that i would lose my fucking mind if i had to take a fight while taking 50 damage while rocket jumping, and NOT having anything to show for it. i was a sitting duck in team fights with a shotgun against similarly skilled players. i cant even imagine willingly taking 50 damage per jump while trying to have an impact on the fight without my banner's buffs without dying and losing any of the progress i made. making banners work practically requires a stalemate situation into an uber exchange + repush with buffs