I just checked with a few ME2 characters whose faces were imported from ME1. Ok, I found this online: Face Code: 12.FJG.6.BF5.3G5.166. The default ME3 female face looks better, more natural I suppose, but is a different person.
I tweaked a default and it was better, but there's a stony lack of expression. The imported face (from the default female Shepard I used in ME1 and ME2) was terrible.
