I think I can fix most of these (Currently stumped by a hard crash in the TBS system that came into being when I fixed the melee guards, I am not a coding guru... far from it so this may take a while)
1: I will try to fix this one, which left door do you mean? The left exit from the tower?
2: This one is complicated, I could try to account for breaking the sequence and allowing it, but I would have to replace several maps which without the original files has a greatly increased risk of causing way more damage than I'll be repairing. I think I'll just have to somehow force the player to get the crystal before Arowar.
3: Okay this bug is too cheeky to remove. I know what causes the crash though and I can fix that semi-easily! It will at least allow you to have Scheherazade until that point.