OK,
I can confirm that I've started planning a script for this. Who would be interested in a) acting but equally importantly b) writing any other scripts (because why not make ALL the episodes!), and most importantly of all c) post-production editing of the sound files?
In terms of recurring parts, there's obviously the Doctor, I make no secret of wanting to nab that myself but am nevertheless very open to other people staking their claim. The companion will be female, and of a species called the Slettarines; generally quite humanoid so banter etc can still occur but will have some more interesting alien traits/abilities too. A second companion, either an android or an Exxilon, is something I'd like to put in but doesn't fit into my script for the first/pilot episode. There will obviously be loads of parts specific to each episode too.