Giving Lore to Another Character

However, more work would be needed to determine where to set the Leap status.

You only need to change all checks for Gau. The setting of leap remains the same. You need to change the code on available characters. From what I understand, $1EDE cover characters $00-$07 and $1EDF characters $08-$0D. From right to left:

Code:

+$1EDE sncccccc cccccccc
            s: there is at least one saved game (go to load screen after title screen instead of playing intro)
            n: go to first Narshe scene after magitek march (instead of back to the title screen)
            c: available characters

So basically, for Umaro, change the following $300B (and the one you mentioned) to $300D and instead of #$08 use #$20. $1EDF remains the same since Gau and Umaro are on the same byte. I think I covered all checks in bank $C2:

Code:

C2/1D0D: AD DF 1E     LDA $1EDF
C2/1D10: 89 08        BIT #$08

C2/1EA9: A9 08        LDA #$08
C2/1EAB: 0C DF 1E     TSB $1EDF

C2/48E6: A9 08        LDA #$08
C2/48E8: 1C DF 1E     TRB $1EDF  (remove Gau from party)

C2/2FB0: AD DF 1E     LDA $1EDF
C2/2FB3: 89 08        BIT #$08    (is Gau enlisted and not Leapt?)

C2/4840: AE 0B 30     LDX $300B   (Which character is Gau)