Re: Would this make Nemsis' ending more satisfying.
If we changed nothing else other than Picard coming to his senses, sending Data back and sacrificing himself. That would have been a different twist on the reset button. They set us up with another reset button option and at the last minute don't use it. I think it would have added more meaning to the ending of that film. Then we have the crew has lost its leader/father figure. Seeing Data dealing with that emotion. Riker gains command of the Enterprise but at a very high price. And Crusher has the what might have been.
I think this improves it slightly because you don't have the "built-in reset button" with Picard that you did with B4, and therefore the impact is more genuine, but I don't think it really improves the film that much.
"why oh why didn't I take the blue pill?"