I believe if you read upstream in this thread #32 you will find I am a fan of Net Installs. I'm guessing 95% of us would be just fine with ONLY Net installs.
There are still the 5% corner cases of course of people who can't use a net install.
And, again referencing the Mesa/gl fiasco, the overall download size of my last update was well over a gig. I might have been better off downloading the next ISO.
So I doubt there will be all that much download bandwidth saved using a net install. Neither initially, or over the long haul. Neither for the users or the mirrors.
But the Net Install does make getting a new spin out the door easier.
Combined with Architect it could really be light weight.
Some reorganization is probably needed so that there is Only One True Net Install (tm), that includes the minimum needed to pull in a base version of Manjaro.
Then launch w3m or Lynx for the user to select their Spin or Flagship of choice from a single web page.
Upstream in this thread it was suggested to me that it was as simple as installing everything found in
pacman -Sg lxqt but I suspect a great deal was glossed over.