On the tee pads, if you want to offer more run-up angles, wide at the back is better. Making them wide at the front doesn't do the same. Say you want to throw an RHBH annhyzer, you would normally start at the right side of the pad and finish towards the middle or left. But what if the left side is blocked out by a tree, then you are running up from off the pad or taking a crooked run-up. Just saying, it isn't the same. Multiple options off the tee is usually good. But balancing the risk / reward for each route is difficult. By doubling the front edge dimension of the pad, you may make 2 to 3 options into 4-6 and one of them makes all the rest obsolete and thus destroys the balance. On a tunnel shot style hole, where there is one basic route, something like this wouldn't be a problem, but still wouldn't be better than big in the back, unless the intention is to give more options, make the hole easier. 5' is plenty on the front of any pad- you never see anyone slip off the sides, it is always the front because the pad is too short or it isn't level in the back so players can't add to their run up from beyond the pad.