Teams has some UI issues (please make the chat more compact) but they have a pretty powerful tool for normal users who are already in the Office landscape.

The fact that you can create a group with some channels, add your files there and edit them together, have a wiki, have a (not very good) kanban board etc. makes it a pretty complete experience. Some of the tools they release needs more polish and some tools are by themselves much worse than stand alone competitors but having everything in one is pretty nice.