[NoOne]

maybe check mods forum? google with "site:www.ootpdevelopments.com" will help too. if the instructions exist or a template exists you'll find it. good possibility that perso doesn't even look at forums anymore, and can't inform you about it.

you can make a .txt file to import to game with the players. if someone has created one, even if a few years old, it'd save you a lot of time for this sort of project.

alternatives are random start leagues for the real historical players (and look into other options in settings related to historical players). maybe you can import teams and cut the fat. as far as dob, you could fix that quickly with a simple sql statement or a little work in a spreadhseet and replace teh dob column with adjusted DoB relative to difference in league year and imported year they came from. could make them all the same relative to import year, anyway. or if you want them all 21, that's even easier.

side note: if everyone is elite, that will have a significant impact on the stats you see.

basically everyone will be like a the bulk of a normal league... guys with ~70contact might be ~.250BA in peak years, lol.

you'll want some scrubs too and some average guys... and some better than average etc etc... distribution is key in how the stats will play out.