I don't see what makes the deck that outdated. I suffer loses(I'm not sure how much, but a lot), but I personally think that's because my playstyle may be different and my deck wast'n upgraded very much at the time(Only Oty, FFQ, Druid, Hourglasses and a few towers).
If the deck doest'n work for FG(I've not tried it in a while), it most definatly works as an AI5 grinder. I've been playing against them and upping my deck, only have the last few pillars, Eternities, Bonds and perhaps Dials to up(Unsure if I should or not). Also upped 6 Novas with the money I made from AI5. Works great against a lot of them, in my oppinion. Might wanna try it against 'em if you're having trouble with FG's.