I agree, but in the case of MRR, WDI did once state that Iger selected that style because of synergy. Maybe it was just PR spin, but that’s an odd thing to claim.I suspect people imagine Iger is actually more personally invested in what gets put in the parks than is the case. In terms of the new-style Mickey for Mickey's RR, for example, I would honestly be surprised if Iger is particularly aware of the newer Mickey shorts let alone he was forcing them into the parks as a tribute to himself. He has, though, very clearly set an IP and franchise mandate that is clearly reflected at the parks.
In feeling that, overall, the quality of maintenance and new offerings improved under Iger from where they were when he took over, I wouldn't suggest that is because he has any evident passion for the parks himself. I think it's more that he's realised how valuable they are to the company. In a way, though, that can be a strength. Iger has generally been best when he takes a hands-off approach and lets others run their divisions... as long as he has good people running those divisions. One of the drawbacks of Eisner was that he imagined himself a modern day Walt Disney and his instincts when meddling with things were increasingly bad.
At least people could talk Iger into all those placemaking initiatives at DCA and embarrass him into picking up maintenance at the parks. By the end, Eisner seemed to be in a world of his own, pushing this barrow that they way to run almost every division was to produce low-cost, low-quality spin offs of everything that Disney had made its reputation in for being of the highest quality. Suddenly, Disney's new parks were quite frankly embarrassing. I never saw any sense that Eisner really understood the damage that was being done to Disney's reputation.
I guess my point is that things were grim almost everywhere in the company when Iger took over, so I think some nuance is needed when thinking about his legacy in the parks beyond simply branding him the Great Satan.
I do agree with you that real life is much more nuanced and complicated than a synopsis on an Internet forum can convey, because the simplest answer is usually not the whole story!