The concept I have in mind for my image format is to use one format for everything (photos, diagrams, clipart, line drawings, whatever), and store everything lossless and at the original resolution.
So maybe you should call it "Free Lossless Universal Format" or "Free Lossless Universal Format For Images".It could be used in a video codec, just like FFV1. Decompression would probably be a bit slower than FFV1 but not much. Decompression in a lossy way (reading only part of the file) would be much faster than FFV1. The compression rate would most likely be better -- FLIF is better than FFV1 for single frames already, and since the MANIAC trees can be reused over many frames, I expect it FLIF to beat FFV1 easily for video compression.
I really just want to say "hey, look at this fluff" or "can I get those fluffy files?".