Little update.
I have 7 teams done pretty much. I'm also finding a few players along the way who I'm adjusting (for batters, primarily down) -- for relievers, for those who are showing 2 or 5 pitches, I'm double checking those for accuracy as well as adjusting control based on end of season ERA. Also, if warranted still creating the occasional player (e.g., Brantly for the Marlins).
I'm getting some curious hot/cold outcomes, but I'm going to stay with what they have on Gameday as there just is no other source I've been able to find. Hopefully I hit the halfway mark by next week.