Firewall harness clips, should they stay, or should they go?

Thanks guys for sharing the ideas and pics, all great ideas.

I was considering using the Adel clamps as well, not sure about pop rivets though, wouldn't it make it a pain for removal and re-installation for future issues?

Im considering removing mine as well but using Adel clamps on all the electrical, fuel & brake lines. I was gonna just use aluminum pop rivets to attach them as well.