Make Teams a UWP or WPF Application
Teams needs to be coded in something that isn't web-based. It is a core application of O365 and we need something more efficient. WPF or UWP would be fantastic. Right now the lag in switching between tabs (~0.5 sec) and the continuing resource use (450MB+ memory) is not acceptable at scale.
Steve Whitcher commented
A UWP could also be in the microsoft store, run on Surface Hub, and perhaps even on xbox. I can't fathom why Teams was developed as anything other than a UWP app...