Interesting facts thanks Time. I wondered about the actual area of the grounds, but it can't be accurately calculated as they are all probably ovals rather than true ellipse (a squashed circle). But if we assumed they all were perfect ellipse then the area from biggest to smallest would be (sqm)
Cazaly 20,187
Blundstone 18,555
TIO 18,555
MCG 17,719
Manuka 17,664
Aurora 17,495
TIO Trager 17,417
Gabba 16,908
Domain 16,881
Metricon 16,839
SCG 16,610
Spotless 16,423
Etihad 16,135
Eureka 16,135
Adelaide 16,133
Simonds 15,355
Eureka Stadium is the rebuilt stadium in Ballarat that is set to hold its first premiership points game later this year with Bulldogs vs Power. According to Wikipedia it is 159.5 x 128.8. Those are the same as Etihad, which I guess is done to make it suit the Bulldogs.