I know teams was originally written on classic AngularJS, and was supposedly undertaking a significant rewrite in order to resolve performance and maintainability problems. Anyone aware if this was ever completed?
It may happen eventually but they have no incentive to make it so. They've captured a significant part of the corporate market by bundling with O365 for Enterprise. Teams has fulfilled it's purpose just as Office did. At least Office is decent software.
Office is nice, as long as they dont hide Desktop downloaders on their website and try to force you to use their Web version which is like 1/3 of real desktop office.