If you allow, here is my comment.
The option for the active/offline status is really nice. But maybe when we think about this carefully we don't need this. (Maybe)
I was also thinking for a messenger on steemit platform before. But I think people are well better on discord, and they are doing good on discord. I have a reason for this:
When we can easily message Steemit users on the platform, your number of harassers can increase. A new type of block system may be needed, many schemes can be implemented.

That's why, I left this idea to include in my Proposals post.

The last one is better, for easy posting. For person like me.
Thank you for the amazing post brother!