I've been toying with an idea for a while now.
In essence:
I've developed a heretical magos, once a master shipbuilder for the enclave of mars that, for his love of ships, seeks to innovate new and interesting ship designs. To this end he has come to the Koronus expanse and convinced several Rogue Traders to form a joint venture with him; the creation of a shipyard independent of the Imperium. This shipyard constructs new ships for Rogue Trader's plying the expanse (or really anyone who can pay the money). While these ships are often of classical designs, the magos has created a few new designs himself (which is really his sole motivation for running the shipyard anyway.)
I could blabber at you further details, (the path the magos took to his heresy etc) but they aren't that important. What I'm wondering is what obsticals would lie in the way of this venture succeeding. I'm not that familiar with the lore of 40k, so I thought I would put the question to some ye ol' grizzled veterns to see what happens.