I’d actually like to see a different change: Keep the banners as they are, but change the skill to a “Summon to my location” skill while the banner is up. This way, if someone runs off with it, you can hit the utility again to pull the banner back on top of you. Additionally, this would let you move between packs of enemies without having to pick up and re-plant the banners all the time.
That said, I’m sure this has tons of balance issues where warriors could just drop three banners and march forward, summoning them every time they leave the effective range.