TBH, I think the only WDW parks/resorts thing done well under Iger's tenure is the Skyliner, because it goes perfectly where it was put (and wouldn't necessarily work as well in other areas of WDW). It actually increases value for guests in a WDW vacation. Nothing else for the WDW parks in Iger's tenure, IMO, increased value. Under his tenure the WDW parks saw:
- loss of Fastpass into FP+, which was worse and then loss of even FP+ in favor of a paid LL/Genie+ system
- nickel and diming guests, from resort parking fees for a time to charging people for trying to use a line queue system that was formerly included to no longer providing DME, which still somehow failed to drop resort charges for guests
- an aversion to increasing ride capacity or number of rides to meet demand for them
- homogenization of most of WDW's table service dining to meet DDP requirements, instead of just leaving them out of the DDP altogether
- increased encroachment of DVC on beloved resorts, which cheapened both DVC and the original resorts
I understand this isn't from the POV of a corporate earnings report, but it is at least (IMO) a partial list of reasons why attendance has been lagging at WDW recently, and it all happened under Iger's overall leadership. If he does get into politics, I'm not sure he could be voted dogcatcher.