We don't do things differently just to be different. Different isn't better. Improving areas that can benefit users is better.
TGF (Trigger Guard, Forward Controls) was a project we often delayed or just forgot about. We like the TDP spec trigger guards, it has its shortcomings that have long needed addressing, chief among which is that it leaves a gap between the trigger guard "ears" which chaffs the user's finger on the grip holding hand. We have other minor gripes as well. The edges are usually unpleasantly sharp, and the swing down winter mitten feature is perhaps one of the least item on the entire system.