Cool! I love the swarm of bats, reminds me of Witcher 3: Blood & Wine!
Have you tried to combine speeds / elements from multiple versions? For example, v5 is really punchy; I would be curious to see how the cool tendrils of v3 burst with a similar speed and with a loud jet or fast moving streak particles. A few screencaps of what you need for kitbash concepts in an image editor could also help you. In any case, just a few ideas – I look forward to seeing what you can think of!
Yes, embedding trips over everyone I think the embedded videos are correct if I put the URL alone on a separate line (if you haven't tried it, I may finally be lucky).