IMO that would still feel pretty contrived and it would be more feasible that Urianger ends up being the one estranged from the Scions rather than the WoL. He already nearly killed the Warrior of Light once doing that in Shadowbringers and the only reason it worked out was sheer luck. If it did end with the Scions circling the wagons around Urianger then I imagine it would get dunked on for not making a ton of sense.