Secure site to site communications is huge for business. I am aware we can setup boxes behind the units and create tunnels, but to be able able to have the edge devices establish the connects is a better solution in my eyes. A good example I had a client (not on this product) that shares a database application over a VPN tunnel over their 8 sites. The smaller sites are way to small to keep adding cost and equipment to maintain business continuity.
As for the client VPN I have a client that uses client VPN for reaching resources at his business from his home. Again fully aware that I could setup devices as small as a Pi, but is that really the direction we want to go? This client doesn't want direct access to his DC at this site so VPN to the router was the way he rather take.
I agree MG is the little brother to Meraki, but we need that balance where we still have SMB features yet not directly compete with Meraki proper.