I think of the boards as where they, are they unique and which of the three kinds of seals they give, not so much as by expansion. The boards in Ishgard & Kugane are unique to each other and reward Centurio seals. Crystariam rewards Nuts with another unique one in Old Sharl. The board in Rats is a duplicate to Old Sharl.

I am getting !00 allied, 200 Centurio, and 200 Nuts from elite weekly marks each week. Might there be another board somewhere that I can do?

Oh, do you have to fully finish the ShB MSQ to start doing the hunt in Crystarium? My friend has the MSQ finished through 5.0, but not all the patch releases.