Maybe.
I can see where the 12:00 or 5:00 reservation for an AP avoids them just making an EPCOT reservation, tapping in and then immediately hopping after 2:00. Perhaps that will free up more passes earlier in the day for resort guests.
It doesn't actually stop someone from doing that tap and hop dance. So, if they run out of 5:00 reservations, it'll happen anyway.
If it does open up more 12:00 passes at parks that don't have opening time passes, that would seem to indicate they can take more guests earlier then 2:00. It would be nice if they could move the hopping time up to this 12:00 time instead of 2:00 for everyone. It would also be nice if they could eliminate the tapping in requirement for hopping.
Eliminate tapping in to hop and move the time up to earlier than 2:00 would be actual improvements for resort guests.