Excel on MSTeams should have all the same features as regular excel. Certain formatting and text orientations are not supported and jumbles text, making professionally made products on the desktop transferred to MSTeams, to look completely unprofessional. Imagine creating a splendid spreadsheet on the desktop, posting it to a meeting with a high ranking individual to view, and it looks like garbage. For example, I had created a maintenance man hour tracker with people's names shown at a diagonal angle. When I posted it to MSTeams for my supervisor to view, everyone's name were scrambled looking.