Since I'm like HSS Strat player who plays on neck/midd mostly.
In my take, I would keep 5 way, and add switch for bridge ... Since I play mostly clean on neck, I would in my case put it on bridge.
But if you are opposite of that and force bridge and dirty, put it on neck.
Luckily for me.
Neck + bridge is nice option to add, ofc.
Bot for some reason, I prefer middle SC alone sound. XD
It's nice option to have for sure. But I'm used to funky middle SC sound ... And since I play on clean more, it's way more usefull for me.