How to send a recommendation of how to improve #steemit?

Hi #steemians
I would love to give my intake about something that I noticed and I don't know where to go...

I just used Dtube for the first time and I found it very simple and nice.
The problem I see is that when you share the post on #steemit the video caption looks just like a picture. People won't know it's a video unless they see the tag Dtube.

Can any of you point me to a place to add suggestions? I would love to participate and help improve #steemit