As a counterpoint, I could say allowing hoppers to have earlier access to afternoon and LL reservations mitigates what would otherwise be a big disadvantage.
The Genie+LL system is much like paper FP, and that system did not work well for people who like to take a midday break then hop to a second park.
If your plan was to leave the first park early in the afternoon and then go to a second park around 5, any FP at the first park with a return time in early afternoon was worthless, and FPs at the second park were probably gone by the time you would get there.
Making LL reservations at the second park for use after expected arrival helps the park hopper get the same value out of the G+ purchase as people who stay in one park all day.