Motto editing will be done from your profile, and you'll also be able to select badges to display on your avatar directly too! (Your user profile is where ALL your badges will be. They're being relocated from your inventory.)
Activity points are being replaced with achievement points in Habbo 2020. Your avatar level is determined by many things, achievement points being one of them. (We showed the levelling feature in a post earlier this year.)
The 'respect' feature is being replaced by something we've called 'Star Gems'. These can be given to other Habbos and they accumulate. And, as you can see, the amount your avatar has will be displayed on your profile!