Currently when SPMT creates a new site it only does a Modern site no groups. It would be beneficial to have the tool give an option of what site you would like to create. Example sometimes I might want a communication site. In order to do this today I have to first create the site in SPO then use the SPMT tool to set that as my destination. It might be good to have a few choices to pick from or let the user build a site template mapping file.