Hold on, there!
The Hopper Option is no longer a "one-price for all tickets" charge.
Yes, it is an "all or nothing" situation, but the price to add the Hopper is not the same for all tickets.
For a one-day (MK,) two-day (any park) or three-day (any park) MYW ticket, the cost to add the Hopper is $50.
For a one-day (Epcot, DHS, DAK) MYW ticket, the cost to add the Hopper is $58 (which WILL ALLOW a hop to MK.)
For a four-day (any park) up to ten-day (any park) MYW ticket, the cost to add the Hopper is $64.
All prices, plus tax.