So the item level REQUIREMENT is actually the item level? I can make it scale to your level but the values in the tooltip won't change. I have no idea how it was with that Gibbed Editor you talked about whether the tooltip values didn't changed there as well.
Yes, item requirement is item level. In theory if you change this level, quite game and load again- damage of the weapon etc. should scale to the new level. That's how it was working with Gibbed Save Editor for Borderlands 2 back in the day.
id like to see this add too i remember the trainer for borderlands 2 work really well in the game.