1) Try setting up the current MLB clubs in correct geographic divisions, then fill them with fictional players. Start in any year you like.
2) Take the original 16 clubs and pretend that expansion never happened. But, the moves did. Use fictional players. Start any year you like.
3) Try a European league. Get the Euro names files and have it.
4) Go with the current Canadian baseball league. (Check it out at
www.canadianbaseballleague.com) Fill it with fictional players. Expansion should be fun as it currently has only eight clubs. (4 in the Western Div., 4 in the Eastern Div.)