I can't wait for FP+. We like to go at rope drop and go back to the room around lunch time and swim or take naps, then go back to the park at night. This will allow us to use our fp for the evenings when we go back to the park. We will be able to enjoy the park in the morning without worrying about running around to get a fp and if the times will coordinate with lunch and our afternoon break. If we want to see a parade or show at night, hopefully those will be options as well. I like to plan before we go, I don't like to plan while we are there. I believe this will allow for a more casual approach to the parks since you can get your fp for must dos ahead of time. For those with no kids or older kids, the old system was great, but for those of us with small kids, having one person run around to all the differents kiosks was stressful. Also, With FP+ we will be able to get a few fp for the evening of our arrival. I was not going to plan a park on our first day, but with fp+, I think I will try to schedule some things for that first evening.
I also feel this will make staying on property even more of an advantage. Since Disney is cutting back on promotions, this will allow them to offer an advantage to its guests who book rooms at wdw. One advantage to emh is not having wait in long lines. This gives you a similar experience and Disney can cut back employee hours. For season pass holders, I hope they have access to this system in some form or fashion. Those passes are not cheap.