This may be a stretch, but I'm wondering if TB will consider making DOPs with a fabric front? IMO this would be especially useful for the large DOPs, because people may carry confidential documents but want them organised within a single pouch.
More generally, I'm sure there are folks apart from myself who aren't especially fond of urethane. First, it's sticky. I'm aware that there are strategies to get around this (e.g. flipping the pouch such that the urethane faces inwards), and do use these tricks, but it does restrict how I can pack my stuff. Second, I've noticed that the urethane on my size 2 KTP has developed some pits after 2 months of heavy use as a pen case. (I'm not gentle with my stuff-- I should not need to be with TB products-- but I'm no abuser.) I think a fabric front may be more durable and more convenient in some situations.