I don't reckon they should really bother with another series. After CNNNN and Chaser's War on Everything, I felt like they were kinda winding down.
As far as new stuff is concerned, I found Yes We Canberra severly lacking in really punchy jokes and I ended up watching The Gruen Transfer's take on the election instead, which I thought was dynamite.
I dunno, I used to love them (I still quote the Fungrys theme when I want food) but recently they seem to be getting on in terms of reletive humour.