Have all the rares in Extra Mode been found already?

[Ludamec]

I mean in terms of rare synthesis boards for weapons armors and units? I mean in the high level extra mode vids on youtube, I only see ppl with the Whitill Wing. So far thats the strongest armor unit I've seen...Is that all that extra mode has to offer rare wise? Or are the future rare synth boards that we will see online..are they already available offline? Please tell me there is more than what I've seen on youtube....

[Ludamec]

Its become retardedly hard to get questions answered on this board since PSU came out u.u

[FenixStryk]

I'd imagine MOST of them are found, but there's always a surprise around the corner.

[Zorafim]

Have they been recorded anywhere? I'd like to know what to hunt for.