In my opinion the series is not 'Burnt out' at all.
Let us look at FFXIII,
To me this game was fresh, It provided a new sense of direction for the team developing FF. The story telling in FFXIII was superb and a step above the last few series. Although linear to an extent, this game still had what all FF should have.
Now it is unfair and unjust to judge FFXI and FFXIV in the same manor you would judge FFXII or FFXIII. These are two very different games. As MMO's they are extremely wonderful and if given the chance the universe they are set in are absolutely beautiful. If you pay attention they have great stories, I can not judge FFXIV on this for I have yet to play it.
Yes I see the point on SE being on a downward spiral as of late. But what JRPG has not been? We are in a period of time when the old must learn something new. Give it a few more years before we judge if FF series is 'Burnt out'
And just for fun my top 5 FF titles in order.
Final Fantasy Tactics / Final Fantasy 7 / Final Fantasy 8 / Final Fantasy 11 / Final Fantasy 13
