Time and expense entry doesn’t have a browser version - its replaced with time entry. There is no such thing as Dashboard in kinetic either - its Application Studio.
If some people still need to access some classic applications, they can just open the client when they need to use those programs, you don’t HAVE to install the edge agent. I probably would not install the edge agent in your scenario because its a pain. It doesn’t autoupdate itself. And it prevents the client from auto-updating nicely.