Or you could just book fast passes in the same part of the park then you won't have to worry about backtracking across the park. For example book BTMRR, Splash and Pirates all back to back to back. In between each reservation do country bears, Alladin, Jungle Cruise, Treehouse, TSI, Tiki Birds and eat lunch. It's the same thing.
I know there are a lot of negatives to the new system (limit of 3 seeming to be the biggest complaint), but I don't see how people felt the old system was more flexible. There were hard return times of 1 hour just like the new system. If a CM let you slide before they have the same power to do that now too. The only difference is now you don't have to go to the machine to get the paper ticket which is one of the few advantages.
^This! If you grabbed a paper FP for Soarin for 3pm and you were already in World Showcase by then, you'd also have to backtrack as well. Now, you have more choices with your times so you can see that ok, morning isn't available but there are plenty of times in the late afternoon and evening. Let's aim for earlier so that in the evening we can just focus on World Showcase. Magic Kingdom can be the same way. Let's start with our 3 FP picks: Space Mountain, Peter Pan, and Jungle Cruise for instance. Space around 11:30am, Peter Pan around 2pm, and Jungle around 4:30pm. Looks like a nice complete circut around the park to me.
With them starting to enforce FP Return Times in March of 2012, the rules have always been the same. The computer is following those same rules it is just helping take the human error out of the equation to provide consistency. With paper, a CM might easily overlook or ignore an early or late return, now the computer alerts them and then they find out if there is a legit reason or not. If they then choose to ignore it, they could be making a magical moment or just not caring, but either way, if you get used to that happening, that's your fault. If you get pulled over for speeding while driving but tell the officer that you always speed and no one has stopped you before, do you think they are going to buy it or let it slide?
By the way, on a side note, here are reasons that people use all the time that almost never work:
EARLY
-We have a plane to catch/we're leaving the park/this was the last thing we wanted to do before we left
-We have dinner reservations we're trying to make/we have another FP time to make/we have to make it to the show/fireworks/parade
-C'mon, it's only XX Minutes/they let us in early at XXXX attraction
-We thought it would take us longer to get through this line.
LATE
-C'mon, it's only XX Minutes/they let us in late at XXXX attraction
-We were at the parade/fireworks/on the other side of the park/in a different park/at our hotel.
-It was raining.
-"They" said we can use it whenever we wanted/we used to be able to
-My child was sleeping.
-We were a dinner reservation from over 3 hours ago.
-I didn't know.
-The Fastpass line was too long.
Remember, now with this new system, you have more control on what times you pick and you also have the ability to modify times if something comes up.