I think that offsite guests will also have trouble getting Soarin' or Test Track during busy periods. Keep in mind that we are only seeing what goes on during very quiet days right now. We have no idea how bad it will get during the holidays.
Personally I think that all of this is pretty unfair for everyone and that's not good.
Yeah, I can see this being an epic PR disaster for Christmas. Anyone staying offsite, and AP locals, will only be able to get ONE headliner FP, and only if they are at RD. Beyond that, folks are getting a ticket book with the E's already torn out.
But, don't worry, FP+ is going to reduce SB waits, so it'll all be good.
Meanwhile, savvy visitors at resorts besides POP will be pulling unlimited FP-s. OF course, everyone always TESTS to see if this works, but they all say they don't use them, so I'm sure that won't be a problem.

I've got to guess Universal big wigs are reading boards like this and others (except for the website that shall not be named that still removes any anti Disney posts), and are laughing their butts off.
Jason