I hope the Ignite Forum is also taking discussions about Ignite Express. If not, please move this impending thread to the appropriate area.
A few months ago (might have been more than a few), I participated in a discussion wherein the subject of creating a version of HitFilm for Linux was brought up. My thought was maybe that a version of Ignite could be created for Linux. Well, I was poking around on the Natron forum and two Natron (as well as HitFilm) users seem to have been successful in getting Ignite Express working on Natron in Linux by using WINE as the virtual environment in which to install Ignite. It appears that, if you can install Ignite in a 64-bit environment of WINE, you can then place the path to the plug-ins in Natron which, in turn, allows them to work in Natron in the Linux environment because the installation is in a Windows virtual shell. Note: they were successful in a Fedora distribution of Linux (all of the linux users will know what this means).
Here is the link to the discussion in the Natron forum. I'm going to try this out this weekend. All kudos go out to Micah Pendelton and EIDirector for finding this out. The posting in question is only 15 days old as of this writing.