Im supporting 2G but there has to be 1 day break between lower finals and grand finals. TH lost VCT Champs because they came to their hotel at 11pm and had to go early to the stadium the next day. TH won the maps they changed comps before grands (Haven Vs SEN and Bind vs GENG were different comps) and lost the maps they played the same comps from other games, meaning EDG had a lot of time to study their strats while TH had no time to study EDG comps.
This means 2G will have advantage by already studying M80 strats and 2 map ban + M80 is tired after playing 5 maps against AK, so I think a day break would be good for the game in general.