"You know, this is wonderful. This is a tremendous idea. Let’s steal the biggest, most obvious ship in the universe and escape in that. Flying around the city, smashing into everything in sight so everyone can see us. It’s brilliant, Thor! It’s truly brilliant!"
Do you know why I love this scene?
a) because for ONCE Loki TOTALLY LOSES HIS SANGFROID and is just a slightly hysterical UTTERLY EXASPERATED logistician who expects his brother to be the usual dolt who just runs headway into battle without thinking of cause and effect. Because we’re meant to sympathize with Loki here, and be exasperated with Thor too.
b) because THOR PROVES LOKI WRONG and shows he has DEVELOPED as a character.
c) and Loki, in declaring quite sincerely that he’s “impressed,” ADMIRES that.