Honest opinion here is that this isnt very useful, heres my points:
If people were to use this to update HOMEBREW, there would be no need for it at all because of HB App Store on the switch itself.
If people were to use this to update CFW, there would also be no need for it because its basically like 2-3 clicks and 1 url to update the CFW, which can also be pretty easily updated by a homebrew app.
Also, the fact ur bundling this essentially as an All-In-One will actually slow down/annoy the general progress, ive learned from experience, I did something similar with kit-kat and it didnt go down well at all.
HB App Store requires the developer to update the app there, this app does not. So it's more useful than you think just in point one alone.