I was waiting for you to point to a concrete example of a project like this in an outer ring suburb where this has/is working now. Do you have one? If this is a slam dunk, there should be plenty of examples to point to.
My main skepticism is on sustainability because in the end, that is what eventually hurts the city and thus the homeowners. There is a pretty long list of splash projects around the country that have left cities with a ton of related above and below ground infrastructure to maintain without the corresponding necessary property tax base to pay for it all as time roll forward.
Just keeping it in KC with P&L, Lenexa is doing something just like this, and it has been very successful to date.
https://www.google.com/amp/s/amp.kansascity.com/news/business/article217273380.html
These things are going up all over here. Town Center in Leawood, Corbin Park, Blu Hawk and Prairie Fire in Overland Park. Olathe is looking at something similar at their old mall site.
Meanwhile, the P&L that is so revered by ISU fans with fond memories of weekends at the B12 tourney has missed revenue targets from day 1 and left taxpayers with the bill.
https://www.kansascity.com/news/politics-government/article9530081.html
I know your schtick is downtown good suburb bad, but things like this are totally a case by case deal. These types of developments can work or fail in either locale.