Or a completely different ride altogether for Tron, which actually, I see as a far more likely option. When Cars was being rumored for Magic Kingdom, many heard rumors it was just a clone of Radiator Springs Racers. The rockwork actually would have fit in really well with Frontierland and complemented Big Thunder extremely well, as a nice backdrop. But then it turned out to be a new ride and a new story, which might work just as well. I'm not here to debate whether Cars should have replaced Rivers of America or not, but the same thing could happen here.
Anyways, I say this because if the return of the PeopleMover must 100% have an IP attached to it, then why not pay tribute to this?:
View attachment 903010