In all honesty, these two would probably get along really well if they let go of their grudges against each other (Trixie's grudge against Rainbow for interrupting her performance and Rainbow's grudge against Trixie for humiliating her in response). They're both really proud and confident ponies and they also love performing (Trixie with magic and Rainbow with flying) so they'd probably be really good friends if they gave each other a chance. Heck, maybe they'd even do a dual performance where Trixie uses her magic to enhance Rainbow's stunts or something like that. I love the design of Rainbow and Trixie as well as their poses and expressions. That background is amazing and it's rather funny to see poor Spike struggling to lift it all by himself.