That's a very interesting concept! I think it could work. I believe that once Steemit is presented in a format similar to Facebook instead of a blog it would be easier to make such groups.

Sola is something between Instagram and tinder where you swipe through photos but I find it very hard to navigate.
I think eventually we will see a platform emerge that is more like FB and Instagram that we're used to, and then people will feel more at ease migrating to the crypto platforms. @appics is aiming to be something between Instagram and etsy where you can share photos and videos as well as have a wallet to deal with payments.