Hallo
The presenters of the Destination Linux podcast have voiced a very high opinion of the Ubuntu-Mate Welcome Screen and Software Boutique in Destination Linux EP109:
https://www.youtube.com/watch?time_continue=2096&v=gGTQlFf28N4&t=35m17s
Please note that the link will take you directly to where they talk in praise of the Ubuntu-Mate solution. 