I've seen the ideas for the Main dashboard but I wanted to see if the Summary Dashboard that is in the system could be the default dashboard for the users.
I was looking over that dashboard after talking with support and that dashboard has everything that we would want in the initial dashboard.
You can change the default homepage for your users by using the mass update users feature. Please see this document for more information: https://support.mlworkorders.com/hc/en-us/articles/54701469502235-Mass-update-users