Can you create a chat screen that archives a few pages of messages? Kind of like online poker? I miss a lot of messages because they disappear so quickly. Plus the font is so small.
There will be many updates to our chat feature as time goes on! 
I’d love to give my input here, but I’m sure you’re already well into the design.
Having the ability to see/scroll the chat in real-time in-game is advantageous, especially during rides.
Breaking that down by color (users in my group) vs. non-local chat would help.
Putting the chat in a panel of the leaderboard that can pop in and out (or be clicked to open) would be nice as well.
And post-game chat access would be pretty useful. After a hard ride or workout, I might want to see who gave me comments, kudos and other comments… possibly a “Read chat…” option from the Pause screen?
But you’re on it, so I won’t drown you with too many ideas :)