Looking back on the loss of communication with Hydaelyn and the last image of her, how she started to glow purple, it got me thinking after watching the videos of T12.

She started to turn purple in the last vision and we also heard the roar of Bahamut at approximately the same time frame. This is also the time frame of the last communication from her and she has been silent ever since.

Looking at the pictures of the regrowing Bahamut, I noticed that he was being recreated around a very large crystal. At the time I didn't think anything of it as I was just thrilled to see the content. Now that I have had some time off, I did some thinking and I put 2+2 together and it dawned on me.

My speculation is that the major Allagan ships started rebuilding Bahamut directly on the Hydaelyn crystal and that is why she was corrupted. But as the crystal disappeared when the final ship was shut down, what happens at this point. Was that Hydaelyn? If her crystal was destroyed, what next?