I've never set foot in Pennsylvania, let alone hunted it, so I may be missing something here but I simply fail to see the issue.
You all get an extra day of hunting. If you want to take off from town on Saturday, catch up with friends and such at camp on Sunday then hunt Monday morning, this change isn't preventing that. So you're not actually hunting on opening day, if this is how you want to plan your getaway. Is hunting opening morning without taking Friday off work that big of a deal?
I'd be popping a boner if I got an extra weekend day added to my rifle season. I don't give a damn about traditions or the Sunday fun day pre-hunt drunk fest though. I guess I am the odd man out.
