To put it Robo's way, several years ago, the company put in a fix to how the lines worked. That fix was FP. Unfortunately, FP didn't apparently assist the bulk of guests in a way that the company envisioned, so they are putting in a fix to that fix. The new fix is called FP+.
If people can't figure out how to use the current FP system (stick admission card into FP machine, get FP, get another FP after the time printed on FP) I fail to see how they are going to master a system that requires them to figure out what rides they want to be on 60 days before they get to Florida.