Caradoc can have a summons issued for him, though he might need someone in the Order to tell him NOT to go, since he's naive and stupid as hell and thinks maybe if he goes willingly he won't look so suspicious. Or heck, if it works out with the timeline, even the canon-death (if disappearance whatever the heck it is with him) works he can be involved in that.
Geoffrey can help bring up the idea of keeping the right media image, seeing as he's the old fogey who's always going on about propriety and being civilized and all that boring stuff.
And Ludo's Ludo and doesn't do anything, except he does want to get this Charitable Quodpot game off the ground and get in good with the public eye, and Barney could probably write some op-ed pieces about stuff that's happening around.