I have actually been wondering about this with some challenges I’m trying to figure out organizing Fibery connected with entities having various containers. I just posted about the ability for entities to have multiple types associated as a way to solve this potentially, although this may be something that is fundamentally against the basic framework of Fibery.
I have found most implementations of tags wanting, so if you guys do go down the road and relase Tags, I really hope they will be as well thought out as the rest of your app - things like hierarchy, some good tie in to Types, and so on.