Well, I, for one, will be watching the Cutscenes from all Available Languages (JP, EN, FR, DE)

I watch Anime, so I'm kinda used to JP-VA, and I also like Final Fantasy EN-VA like Balthier, Judge Gabranth and the other guys in FFXII & FFXIII. Besides those, I kinda liked the EN-VA in FFXIV, albeit there wasn't much lines. I'm not an expert in these kinds of stuff (Obviously) but I think both Language has its' own Unique-ness and feel to it.

(I kinda liked EN-VAs with accents (british) mostly, while JPs being the overall, All-in-all, If done properly, both sounds magnificent >.>)

Other than EN and JP Voice Acting, I've never heard of FR or DE Voice Acting, so this will be a new experience for me and I'm looking forward to it!