Both the TOD off 2 wheel drive switch and 4 wheel high switch mods have been done before. I found the instructions here. I just combine them in to one switch.

The switch lets you electrically choose how the transfer case behaves. There are times when locking the front in to a 50/50 split in high range would have its advantages like snow or ice. Or out here in Ca playing in the dunes or sandy washes in the desert. It’s all about options I guess. Besides I can't leave anything stock for long.