So far, Gallic unlawfuls such as the Union Corse don't like the Outcasts. The Gallia underground have their own version of Cardi, called NOX. They don't want cardamine because it will affect NOX sales. So yeah, Gallics don't like Outcasts.
As for interested parties. A lot of people. Some rich buck on Gallia's probably looking for another way to get high.
If you want a smuggling faction that deals Cardamine to Gallia. I suggest the 81-Syndicate.