I was thinking about convert 7 Hours Later too. It's a nice campaign. I'll see what I can do. Do you still have original vmts from the last version? If not I will try to extract it from bsps. My email is email@example.com
I'm helping a friend of me to do his campaign, maybe it will be more slow process.
Your feedback is welcome. Now it's missing some textures, it's easy to fix. Biggest problem is crashing for some players. For me it never crashed, maybe it's related to missing textures, I will update it soon.