That's why I said depending on the possible price (and, of course, the specifics of the offerings attached) of a paid FP+ offering.
Of course 2 additional free FP's might not be enough for most people to go from All Star Music to the Poly.
If, though, going from, say, Pop to Riverside costs less per night than the hypothetical paid FP+ system, that could be enough to convince someone who knows they'll be content with just 3 free FP's per day because of their touring style to make the jump from value to mod, especially since that cost difference would also include the resort differences and could thus be a little easier to stomach. Especially if it's a guest that doesn't ride many things for whatever reason, or who knows how to maneuver the parks to optimize riding without FPs, the hypothetical guest in this scenario might see more value in {POFQ with 3 free FP's} than {All Star Music with 2 free FP's and a paid FP+ system}.
The endgame is to offer things in a way to increase revenue, so if they could offer justttt enough of a "free" incentive to hook the people who won't pay for paid-FP+ but would pay for a higher tier resort if the pot were sweetened slightly, then i could absolutely see them doing that. Maybe, to hook the guests like you described, they go even further and offer free unlimited FPs for CL guests.
This is all just a hypothetical, though.