I'm all about customization! And the only thing that I find missing (weirdly) in this app is the only sound you can't customize! The default "iOS style" send sound! I always have wild ideas but for my Tennis partners I'd love to have 2 different sounds of balls being hit so sending messages to organize the next meet-up would already be like playing! Just for example's sake of course but the sky is the limit if you can unlock this function! Please? :)