Dusting this thread off with a recommendation.
Now is the time to start doing Flux capacitor. I have yet to see more than 20 compete, and best I can tell most of them are doing first roll then Mr. Roboto if they have it. They're hoping for everyone to fail while they do no risk.
Why do I know this, you ask? I just won my Flux Capacitor by spending three days buying my way in to every Flux Capacitor battle until I got my first 2 push success, then using Beyond My Control for a free one (I saved BMC for the 4am fight, since that seemed like the lowest participant fight each day). Looking at it one way I spent 2 million on RF. Another way to look at it is I saved 14 million from not having to buy it.
Since S-ranked parts are banned from fights now, its an equal playing field + RNG if you are already full Foam.