RE the OP -- yes I do keep hearing this rumor about paying for FP, but only on WDW forums and podcasts!
It could happen I would not be against it because 3 FP is most definitely NOT ENOUGH for MK. It was nice back in Sep they gave a 4th bonus FP+ at MK. The 4th bonus FP+ was limited in choice (like HM and a few others), but you could change it in the app later. Did not get that 4th FP+ in Jan, bring that back pls TDO.
But in the 2 parks with the tiering, 3 FP is TOO MANY. Would be happy to give up 1 or 2 at Epcot or HS just to get more at MK.
2 or 3 FP is just about right for AK, limit works well there... not being able to park hop and pull FP in two parks is what messes up a day at AK right now, since I almost never spend a whole day at AK though I do love that park (you can't get much of a full day at AK when it closes at 5PM most days in winter!).
But... I'll say one thing, it is VERY NICE hopping to Epcot or HS in the afternoon or evening, and STILL being able to ride Soarin' or TSMM without a very long wait. You just have to give up your ability to use FP in that first park.
The one park limit really does screw up park-hopping, I am praying they lift that one park restriction.