Like, instead of spending say $200,000 on a Movie Theater upgrade (these numbers are made up) you could spend $400,000 on it and have it upgrade in an hour. It would obviously deflate the need for gold (don't know how many people use it for upgrades anyway) but I think it would add a lot to the economy planning aspect of the game.
Thoughts? Is this a terrible idea? Am I just annoyed at looking and the upgrade icon over a single building for a day and a half? Is CCMark really transvestite cross-dresser lurking on a nearby street corner?