Unfortunately there's no really viable content for a trailer, and development is nonexistent (there are a total of 3 active members in the dev team and from what I'm aware none of us have done much, mainly due to RL issues). Also, being something of a perfectionist, I don't really believe in showing anything publicly unless it looks good and is nearing completion. Unfortunately SftSoK itself is nowhere near either goal at the moment, and I doubt it will be for some time
Thanks for offering though