Oh– It's a buggy video call solution and poor replacement for Slack? Yeah, not important.
They're at over 270m users in an ecosystem of 350m Office 365 users. There's no "less buggy version of Teams" out there with market share to attract by making minor improvements to the software.
It does exactly what it's supposed to, and what Skype for Business already did. The biggest thing moving the roadmap forward is Teams capability to do "Office 365 Enablement" - i.e. win new users into the Office 365 ecosystem.
There's a lot of things Microsoft can do to accomplish that. Some of them may be new Teams features. Some of them are tweaks to pricing and bundling and other unsexy things like that. Some of them may eventually be bug fixes or fun features that make Teams more enjoyable to use.
But, at this point, your best chance of getting minor features built, is to hope internal Microsoft employees find it annoying enough to prioritize, just so they can see the feature fixed.
Because Teams does what it's supposed to, decently well, and well enough to succeed massively in the marketplace for "generic video call software I don't have to pay a bunch of extra money for".