It's not like waits for SM were much shorter before FP....
I apologize for the minor thread drift, but it does tie to peak crowds.
When I went to MK twice last week, my 10yr old pretty much wanted to ride SM over an over again. We were able to snag a few FP's for it, and other times I said we could wait if and only if the line was under 35min (averaged 40min throughout the day). Longer than that and we'd join up with the rest of the family.
One thing I noticed, though I'm somewhat new to this forum (long time lurker) and I'm sure has been discussed ad nauseam, is that proper operations greatly has an impact on capacity.
There are Youtube videos on it at various parks. While in line for standby SM (left side), I decided to clock two different CMs on two different days while dispatching trains, once when I just got up through the tunnel (where you can see dispatch), and again once I was approaching boarding, so I'd have better sampling. Time sample was constant of 3 minutes, and I made sure there were no major variables such as disability loading, someone dropping an item down into the track...etc.
One girl was absolutely FANTASTIC. She was doing restraint checks and dispatching trains at a rate of about 17 seconds, which is about 3.5 trains/minute, or 1,260 people/hour on the left side, and you could see the skip in her step. The 35 min wait didn't even take that long. She was in "go mode".
Meanwhile the other day, the other CM was visibly more sluggish, dispatching at about every 30 seconds, which is obviously 2 trains/minute, or 720 people/hour. You could also see this CM wasn't as peppy. The 35min wait time on the sign and on my app actually took 45min to board.
That extra 540 people per hour from the first sampling makes a HUGE difference! If CM #1 was working at all the major attractions, perhaps standby lines would be shorter and there wouldn't be the need for this influx of Guest Experience Teams to deal with frustrated patrons. I feel WDW is now just a FP+ scramble, and if you're SOL it's Philharmagic and Muppets 3D for you. But optimzed operations could also alleviate a lot of the stresses felt by many.