Cutthroat Cardboard (Barry)
I am also backing this even though i have the original as i trust their game design skills and production experience.
As you own the original game and are still backing the new version I presume you feel that the system stills stands up and that the new content is adding something?
I was impressed by Modiphius handing of their Airfix mini's game. Almost as much by their obvious love for the old material it was based on as by how they choose to re-interpreted it. Given their connection to this IP through the RPG I'm hopeful they'll bring something interesting to the new version.
Having played a bit of Warzone in the past I'm tempted to think that this might be a better scale and approach to play out the kind of scenarios I'm interested in. I liked the idea of the jungle tiles that have been announced as it opens up more stories that can be told with the system so hopefully the third expansion will provide more alternate terrain/locations to play in.