If they are going to be the same thing as FFXI you really want to keep them. BCNM (Burning Circle Notorious Monsters) gave access to some really really cool gear and gathering those pesky coins was a pain. Although finding the right party members and appropriate gear for some of the harder ones was even worse lol.
But given the beastcoins are in game the BCNM's cant be far behind.
FFXIV : Khaap Keha : THM(Bodhum) In progress and enjoying it so far.
FFXI : Khaap : 75BLM, 75NIN Retired (sadly and it was purely down to graphics)