The farther back in time Picard goes the more changes to the timeline he'll make which could be disastrous. Look at all the trouble that occured when McCoy saved Edith Keeler's life. Picard made the right decision to go back to the point right before the Nexus scooped him up, if he wants to do the least amount of damage to the timeline.
Agreed. Film narratives are not the place to make big, sweeping fan fiction changes to a large timeline, that might incorporate franchise-specific information other than anything covered in the last 14 minutes or so of the film in question.
Sure, you could take Picard back to a France orchard somewhere during the events of the episode "Family" but who other than about 10,000 HARDCORE fans would give a damn, and even then, what's Picard supposed to say?
"Sleep with one eye open, Rene, because someday a fire's going to kill you and your family..."