I was thinking too that they may publish JW.org Monthly, as a 32 page magazine instead of the public w and the g.
But The w is their flagship title, although they could still publish the study edition, the thing is, "JW.org" may not appeal as much to the public, it sounds too jw inclusive. Of course they could publish articles about the GB and each issue the cover could feature a gb member LOL!
JW.Org may not work well as a magazine name for the public.
And the w & g have very long histories.
JW.org. monthly seems like it would be a magazine for witnesses only.