Banners are a cheap way to add visual interest. The permanent marquee is the attraction sign in front. The new direction was an "open house at an Institute" and when conventions/open houses happen, a lot of the time there's banners and signs and whatnot. When you can't afford to change the building, signage/building-size decals/banners are an easy way to go. On the flip side, no one at WDI wants to change that iconic building, so a banner is easy to get rid of with no harm done. It should have been gone or replaced after 6 months, tops. All likelihood, no one even thought about it. I'm not sure of the specific banner you're talking about - there's the JII name banner crossing the entry, along with some hanging ones, and the JII banner was changed out between v2 and v2w/Figment. I remember an Imagination Institute banner as well at one point.