I don't feel we should be getting ahead of ourselves here. Mark has posted once and very specifically with a message to one of our regular contributors, this doesn't mean he is intending, or even willing, to put put his head on the block.
I think it would be useful and good PR to have a factory voice here from time to time, it also makes the factory guys more human rather than just a name. When Ansar Ali was CEO of Caterham Cars, he used to not only monitor the club forums, but contribute from time to time as well, not a lot, but just enough that people knew he was around. I think it did the world of good and people respected him for it.
We will have to wait and see what Mark intends to do, if he feels that it would be a good thing to contribute, then welcome, if not, I'm sure we all understand.