I wouldn't go around asking for people to give suggestions as they are likely to end up asking for a full blown savegame editor... Unless your are up to such a challenge?!?
I'm going to do the replay viewer first - I just found what the data I need in the save game ( it was 6E 00 00 00 06 that gave it away if anyone wants to know). After that, maybe a save editor (time permitting). I have accidentally changed most things by now anyway . But anyway, replay viewer first.