User blog comment:Miskos3/Fairy Tail Launches 'Shocking' Project Next Spring/@comment-7418318-20131201134851/@comment-4829046-20131201142613

If that were the case I something along the lines of -

Natsu - Fairy Tail is back!

Happy - Aye Sir!!!

Lucy - Well minna, you miss us?

Gray - Of course they did.

Erza - We will show them the power of friendship once again.

Lily - Uh...I think they want us to start the episode now

Wendy - I'm sorry if we've been stalling you. Here's the first episode of the new anime.

All of them begin giving the events that were taking place prior to the anime ending. Then comes the epic troll! They say that they will first give us a different story(filler). Cue whatever the filler is, perhaps the filler would be a lengthy version of Gildart's silent chapter or maybe a future story one like you suggest. As long as its those, its fine. Actually a past (back)story would also be good. Maybe even some actual foreshadowing for Rosemary so as to lessen the ass-pull effect.