I think Muirfield's 15th hole and the two tees needs a thread of its own. Well, architectural discussion anyway.
From the members' tee behind 14 green, my recollection was a straight hole, with a string of pearls carry bunkers at the start of the fairway, and a single bunker on the rhs just before the fairway fell to a lower level. Regular play would not get to that lower level. The bunkering from the members' tee is best described as 'penal', with the carry of the string of pearls and the right hand bunker offering limited strategic position. However, any drive which got past the right hand bunker got the turbo-charge kick forward down the hill, receiving significant yardage gains.
If this tee was used for professional play, it would be a very simple hole, with all players getting down the hill to the lowe level.
In lieu, there is a tee which creates a 30 degree right dogleg and a longer tee-shot. The string of pearls are no longer in play, and the right hand bunker suddenly is part strategic and part heroic, as it is placed on the inside of the dogleg and protects the turbo-boost downslope. If the bunker can be carried heroically, significant yardage is gained. If a shorter shot is played near the bunker, significant yardage is saved. Playing away frm the bunker makes it quite a long hole with a long second.
15 is a very good hole at Muirfield, but there are a lot of good holes there, if you look.
James B