This should be fun.

FFI - Old-school
FFII - Unintuitive
FFIII - Underappreciated
FFIV - Epic
FFV - Cool
FFVI - Powerful
FFVII - [An] Experience
FFVIII - Ick
FFIX - Brilliant
FFX - Alright
FFXII - Disappointment
FFXIII - Meh
FFT - Themostfrickingamazinggameever