Extra was neat. I began to like the "Rock-Paper-Scissor but in blind" mechanic after a while, and all the cameos from various Type-Moon celebrities were cool (Aozaki Sisters, Arc, Shiki from Garden of Sinners). Fate/EXTRA CCC was also good in all the BB and Jinako greatness (Kiara had some moments as well). Going to be interesting to see what the remake changes, beyond the gameplay (I think the Rock-Paper-Scissor mechanic is no more?).
I am not a big fan of the Bikini Servant concept, but since I like Requiem, I am rather tempted by Erice in the current banner in FGO.