I would like the ability to send free form messages to friends. Right now you can only pick from certain things to send. If my friends says "Let's do some group goals together" and I say "Yes, that sounds great" that's the extent of it. But if my friend creates a group goal in a restaurant I haven't unlocked, I can't let them know that I can't do that goal, or tell them venues I could play in. You could add an option to let people decide if they want custom messages, the standard/current messaging, or no messages at all.