It's a strange spot for the Cubs. How much do they care about home field in the WC? How much do they care about Braves or Phillies/Padres?
Right now, they are in Cincy. Then, they go back to Chicago for three, after an off day Monday. Then, they fly to Boston (who will have nothing at all to play for). Their choices from there are a) go to Philly, b) go San Diego, or c) go back to Chicago.
It seems a lot better to try to get games back at Wrigley, but there's only one day off before the WC, and we know how careful they have to be with their bullpen arms.
It's just a tough strategic situation, trying to get the best seed and the most preferable travel schedule while also preserving your arms. The good news for them is that their offense can make the pitching choices mostly moot by putting up an 8-spot.
The good news for the Brewers is that three teams are going to have to make tough choices in both the last series two series of the season and in the WC round, with the potential of getting an opponent that's had to not only expend a lot of on-field energy, but also travel quite a bit, potentially even to the west coast and back from the east coast.
I don't know what I'm HOPING for, exactly, but I think there are more good scenarios than bad ones from a Brewers perspective, and I think it's easiest (and most habitual) to just root for the Cubs to lose.