We are definitely breaking it regularly and adding new features. Probably the best time to revisit using Slashtags features will be when we release our mobile wallet.
At that time it will be used in production with some web platforms, including Bitfinex. We are not really soliciting people to go wild using it yet, but if anyone has serious interest in applying it, we will help and we are openly looking for teams to collaborate with.
Certain use cases already work, but we are regularly updating the code as we implement into our wallet and polish the UX.
Things should be much clearer, cooler, and powerful this summer.