With respect to the pro game, I don't care and I'm sure they don't either.
The strangest shotgun start I've ever experienced is when I played an event at Louisville Country Club, and out group started on hole #15. Here is what the pars are for 15, 16, 17, 18, 1, 2, 3 and 4.
3
3
5
5
5
4
5
3
I'm sure this is not what Walter Travis envisioned, but I'm sure he didn't foresee shotgun starts, either.