Well... I had a similar problem. I'd been playing Elements since 2009 and hadn't made an upped FG deck. I had relied on SG's godkiller. When Sundial got nerfed, I needed to gain a source of fast cash. I upgraded a T50 deck and started grinding and grinding and grinding and grinding until I had enough to upgrade part of an RoL/Hope deck. (with heavy help from Krathos, Higurashi, and others) I finished upgrading it today. I know exactly what you're talking about. I often face the same FG twice in a row or with one other in between. It's sometimes beneficial, but it's often Dark Matter, Dark Matter, Decay, Neptune, Dark Matter, Akebono, Dark Matter, etc.
The two things I learned from my first two days of farming v1.27 are:
1. Like jmdt said, it's worthwhile to have a steady source of backup income in case you have a bad go of farming. I don't have the patience to farm AI3 endlessly, so I didn't make an AI3 deck. My goal is to make an EM AI3 deck from my FG earnings.
2. If you face an FG that you often have difficulties winning against, skip it. It'll lose you 30
, but it'll gain you valuable time. One upgraded card offsets forty loses. Make the most of your time. You'll probably gain some patience too.
