When I was there recently, there was construction near the Car Care Center, which having had to get to car rental location there years ago, I recall the route & intersections being convoluted and potentially dangerous.
Apparently the construction is now complete on the southbound side:
https://wdwnt.com/2022/12/new-traff...y-and-world-drive-near-disneys-magic-kingdom/
and apparently said construction was part of "World Drive North Phase II":
https://wdwnt.com/2020/09/permits-f...edposts_origin=423342&relatedposts_position=0
I guess Phase III will continue the improvements needed for a proper, two-way Floridian Way moving forward. The intersection of Floridian Way and Seven Seas Drive right now prioritizes Seven Seas Drive traffic, with only a stop sign for that vestigial end of Floridian Way between Seven Seas Drive and Bear Island Rd. With the new northbound Floridian Way under construction, (it's in the pictures in the first article above), they'll need more than a stop sign for people heading "north" on Floridian Way once this new road from World Drive connects.
Turning left out of Poly right now towards World Dr isn't even a lighted intersection, same with the Shades of Green intersection only 100ft away. I imagine that's another change coming.
They already built that divided road connecter between GF and Reams Rd, so to me it makes sense to connect that through, and alleviate some of the World Dr traffic that can make bus trips to MK take forever.