What role does the MLSB play in actual scouting for the draft? What little I've been able to gather is the MLSB has scouts, but these scouts are not tied to a specific big league team. All player reports provided by MLSB scouts are distributed to all big league teams and each team can send one their own scouts for further evaluation based on the initial report by the MLSB? Is this correct?
This is correct. They are responsible for giving an independent evaluation of the players. Most of the time these are top flight guys, however I have seen them watching guys in high school that are not your top flight guys.
They will also gather general player information and post it to their database.
Their database is shared with all MLB teams.
It was essentially a matter of efficiency for the MLB clubs.