Inflation doesn't just go to one app. Busy, steempeak, partiko etc are equivalent apps to steemit.
I like your idea (I think), by the way. Although, I do have questions like @ura-soul did about just transferring problems with inflation from steem to the various SMTs.
Sort of. They are more like different UIs as opposed to different apps. They have the same economics and whatever is posted on one shows up on the others.