loll all of a sudden my stadium reappear as selectable. As for the looks of stadiums , its totally unrelated with someone who play the game but still effect, so if you dont play game, dont buy stadum its a waiste, thats the message you want to pass ; remind you i paid around 10k usd for each stadium, this is a fn joke.
The difference is 4 star stadiums let you have 110 entrants and 5 star allows unlimited entrants. 3 star only allows 55. The free ones allow only 11. It is a difference that matters, even now 11 tournaments fill up a lot (from what I have seen). Dependent on entry price and bonus money of course.