Looks very cool, will have to give it a try. How does a user experience someone else using brand new chat features from a different platform? E.g., what if someone on iMessage used the new sticker features while I am on beeper?
Small note -- In the "more features you'll love section", clicking the links makes the bubbles shrink and cut off the text for me (chrome on mac os)
Looks good overall to me. Might try it sometime down the road.