To early to launch a signature campaign and what's best for them at this early stage is to create more contest or other type of promotion which can increase their new user engagement to their casino and after they get profits from those maybe that's the time they can open up a signature campaign to support their platform and make it grow more here.
and first things first, they need to improve their ANN. the OP has copper membership already, so he can post snippets of their site. at least, give the visual snapshots of their site and not all texts.
as they are already licensed, for now, yes, it would be better to run some promos or contests to attract some new players. sig campaign can wait. they need to learn more about gambling marketing activities before they jump to another promotional activity.