eg: /noisy 5m or something
and optionally, automatically have everything notify you for a few minutes after you send a message in a channel in case people forget to reply/mention you
this is needed as well as making this enforceable by administrator on a per-channel basis. this is essential for critical chat messages, etc.
Also, this needs to be coupled with email notifications. it cant just be app/web notifications.
Personally, I can't see when I'd want _everything_ to be noisy (I'm in a lot of rooms) - what use cases are we thinking of? I would however love for 'potential replies' to be noisy by magic.
I'm really not sure about administrators' being able to enforce this - ultimately its up to the client how notifications are handled, so if Riot did implement non-optional notifs I wouldn't expect other clients to honour this. What we _could_ do would be to support 'administrator-recommended settings' that the UX could warn you about when your settings were not aligned?
There are two questions you are asking and I'll attempt to answer them:
For a lot of us, chatops are mission critical. We are not using this as a convenient chat tool, but as a significantly important email replacement. We have used these for anything from server down to field operations incidents. So mandatory notification for certain channels are critical for us.
For others, who don't use chatops in this way - this feature is an annoyance at best.
That is a UX question and solvable through great UX choices. You don't need to adopt the behaviour that I need.
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and optionally, automatically have everything notify you for a few minutes after you send a message in a channel in case people forget to reply/mention you