There are numerous opinions, and it is going to be difficult to fulfill everyone's wishes.

"... but easy lining the pockets of our amakudari & Yakuza-affiliated construction conglomerate friends"

No; not really. You need to build a stadium capable of hosting the Olympic games and putting on a grand opening/closing ceremony.

Anything else is just pandering to interest groups or attempting to capitalize on this.

You can please some people some of the time, but you can't please all people all of the time.