No other past cast members showing up on this cast list.....yet

Spade said when writing this sequel that he wrote parts for Walken and Rock's character. Presumably if he is bringing Rock back the only reason to do that would be as a wedge between Joe and Brandy. So assuming Brandy is also supposed to be in the sequel. Yet none of these actors are posting on the cast list... yet.
I fear if they do not bring back at the very least Brandy it's going to be a fairly rotten sequel. We need to see Brittany Daniel, Kid Rock and Christopher Walked back with Spade for this to have reasonable expectations of success. Questions beg to be asked are... Will Brittany be back? She isn't exactly burning it up since 2001 with a majority of TV work since her last appearance. They should be able to afford her acting talents if she is interested. Kid Rock works cheap so I can see he would come back. Walken is a bit of a wild card in that he isn't a cheap actor and would they be able to secure his services? He is doing voice work for Jungle Book which is 'filming' now. And the new Peter Pan movie he is in is slated for pre production. I imagine he could still slip away and do some bit work in JD2, but again the question most likely asked is can the budget of this film afford him? Let us hope so. Would be nice to even see Adam Beach and Roseanna Arquette also make appearances, but those are long shots to be sure. Lets hope we are getting at least 2-3 supporting actors from the first film in part 2. Otherwise I think it may be doomed.
I know we aren't supposed to expect much, but I revere Joe Dirt to be a cult classic and masterfully done. It's unlikely we will see this happen in a sequel that should have been done much sooner, but one can always hope for a solid effort.