I like 1 and 3, particularly because they've got something going on in the foreground, even though there are technical issues with them as mentioned above. I've done fireworks before now, and they come out OK with a bit of practice, but I don't have anything happening in the foreground, it's just the firework on a black background perhaps with a few trees dotted around. I keep promising I'll try harder, maybe next year.
As for the tripod movement, I haven't had that issue myself but I have seen people hanging heavy-ish things from their normal tripod to give extra stability.