Maybe one that likes disco?

Anyway, I agree that Subaru can get annoying, especially because he's dumb as bricks. However, that's the only thing I don't like about this show. The fights, animation, magic, swordplay, and non-Subaru characters are all great. Emilia lost her fake tsundere persona from episode 1, Felt got fleshed out (I can only wish it happens literally ), Elsa's psychopathic motivations were elucidated, and Reinhard's chivalry was emphasized.

While I agree with you about the annoying trope of enemies escaping, it actually makes sense that Elsa survives. She's too pro to fight an impossible battle, so the fact that she held on that long means she had a chance, and when it disappeared, she devoted her all into running.

What did Reinhard see when Felt was handing over the insignia? It's not the trinket itself that bothered him because he handed it over to Emilia at the end. He also asked Felt's age. Maybe that insignia can only be held by elves or royalty, and Felt is an abandoned heir to the previous evil emperor (cough, Chaika, cough) or something.