The reason FP caused crowded lines is the over abundance of them. It was not necessary (whether the system allowed it or not) for people to have to grab 2 and 3 and 4 more fast passes. Disney can cap off the amount of times people wait by closing stand by lines right now if they wanted to. I like the idea of queuing people up to cone later and stand in standby. That could work. They can limit the amount of free Fast passes that are made available and they can prioritize them for the guests filling their hotel rooms.
Explain to me what exactly Disney would accomplish or hope to accomplish by pricing large families completely out or lessening their experience.
Even at $8 dollars a day per guest per ride..a family of 4 is a little less then $100 dollars a day to go on 3 rides. That is comparable to the theme park ticket price.
When something is not working you do not resolve one problem by creating another. You try to find a way to keep the guest base satisfied so they continue to come back, so you continue to get them spending money on all different segments..food, merchandise, upcharge events etc. You do not cripple them and charge them for using the amenities that were at one time included with admission.
When cable tv increases they might go from 200 to 230 dollars. Not 200 to 400. They might charge for channels that were once free. But not EVERY one.
You are completely ignoring the impact this type of change would have if it came identical as DLPs over to WDW.