I'll reiterate what was stated in another thread: The only thing anyone can accomplish by suggesting a story idea on the BBS is ensuring that it will never be done. Talking about whether Data should be brought back is one thing, but talking about how to bring him back is crossing the line into story ideas and should be avoided.
If this is the case, let me put this out there so it never happens.
Data never died. At the last possible moment, he was plucked out of the timestream by one of the factions of the temporal cold war, who had a need for his vast knowledge and his problem-solving ability. After determining that he was being used for a less than noble purpose, he manages to escape by using the time travel device, and he returns to his shipmates in the 24th century.