I'm not an experienced modder but I think I can help.
I don't know of any 'formulas' that could accurately create perfect ratings but I do know how basic ratings work.
Contact
For ratings select the players usual performance
Check their stats vs. LHP and RHP
Contact:
.330-.320 AVG = 95-97 Contact
.320-.310 = 92-95
.300-.310 = 89-91
.290-.300 = 86-88
.280-.290 = 82-85
.270-.280 = 79-81
.260-.270 = 76-78
.250ish players =70-74
.240-.250 = 67-69
.230 and below = 56-66
Power:
50-60HR's = 96-99
40-50HR's = 93-95
35 HR = 90
30 HR= 85-89
25 HR= 82-84
20 HR = 77-81
15 HR = 73-76
10 HR = 69-72
5 HR = 58-68
Eye:
From my understanding Power is very well complimented by Eye so a good power hitter should have high Eye ratings 75-90
If a player BB's a lot they should also have high Eye ratings
Speed:
60 SB's and up = 99
50-60 SB's and up = 93-98
40 SB= 90-92
30 SB= 85-89
20 SB= 81-84
10 SB= 77-80
5 SB= 70ish
Hope that helps! I know this from playing the game a lot and tweaking the rosters myself. As for pitchers, that's much more complicated and I can't help you. Just remember there really isn't a way to get 'perfect' ratings because a players performance is often quite unpredictable.
1. Download the file, open it up with WinRAR or 7zip.
2. Then open up your 2k12 directory.
3. Make sure to save the original file you are replacing to another location just in case you don't like the new cyber face.
4. Just drag the .iff file(s) into the directory and overwrite the original file. In some cases you will need to download a particular roster for the cyberface to work.
Did some testing of this today. It worked great considering no one has ever really been able to successfully change the schedule. This greatly improves the game. Thank You! :)
hi, im new to this site, this seems like it would be really cool if it works, im having trouble copying the schedule over and I was wondering if anybody was planing on posting a version of this that has a 2013 roster + the new schedule, thanks