What I currently miss in Stride is the ability to understand - for each member: what is the last message he has seen.
I think Hangout implements it very well (check red arrows):
Overall Stride looks promising - keep up the good work!
Hey Chen, welcome to the forums!
Great idea and I hope to see something useful like this implemented in the future. What have you enjoyed most about Stride so far?
I have an app thread going over here that I'd love for you to contribute to:
https://community.atlassian.com/t5/Stride-discussions/Stride-Apps-Share-your-infinite-cosmic-wisdom/td-p/764494