What's wrong with keeping FP users' waiting in line to a minimum?They've already waited for their FP window to open up.
I just don't see why it's necessary to make FP riders wait in line for 15 minutes, especially when the standby line is very short as well (<30 minutes). I would use morning FastPasses more often if they saved more time. I'm sure baby-swap users would appreciate it, too.
Nothing wrong with making merging point closer to boarding point, not always possible however. Their promise "little or no wait", 15 minutes is little. Of course when SB is only 30 min it does not seem "little" and this is why during slow times some rides do not even distribute FPs. 15 min comparing to 90 -120 min SB looks much better however. I think with current design of rides, they simply cannot do it differently. Notice that majority of rides were built before FP, with narrow passages and no space for second line.