If Mission San Francisco de los Tejas had not been burned when the missionaries abandoned it, a plausible prediction is that the missionaries would have eventually returned to continue their mission. The preservation of the mission would have provided a physical base for future missionary efforts, potentially offering continuity and stability in their activities among the Indigenous peoples in the area. This could have facilitated further attempts to engage with the Hasinai and surrounding tribes, possibly leading to different dynamics in relationships between the missionaries, local Indigenous communities, and rival groups.
While other options presented could be valid in different contexts, the potential return of the missionaries aligns with their historical motivations and patterns of re-establishing missions after initial abandonment.