I'd be happy to look at specific pairings of roles that can't be combined, rather than blanket prohibitions.
Minister of Media, Subversion and Sandwich Making
Associate Justice of the High Court and Senior Moderator
Former Delegate (x2.5)
Former Member of the Committee for State Security
Former Chief Justice of The High Court (x3)
Former Minister of Foreign Affairs (x2)
Former Chair of the Assembly (x3)
Former Minister of Security (x2)
Former Local Councillor (x2.5)
Former Forum Administrator
Former Minister of Media