Even if you intend to demand that you retain distribution rights (which are in your control before you ascribe them to anyone else), the long-term reward architecture is something you absolutely need to be aware of before you decide to put anything on a public blockchain. Unlike most distribution mechanisms, you have no control over the presence or absence of it at any point going forward.

As long as one node exists of the blockchain, your work is forever immortalized and you cannot revoke it.

For most authors at this point, publishing directly to Amazon is probably, overall, a better outlet. At least for pretty much any form of non-serialized fiction. While serialized neo-pulp stories do see publication through Amazon, it can be very difficult to maintain public interest for such content because Amazon really doesn't have the architecture to maintain communities.

Though, honestly, given the questions about how long-term rewards can possibly be apportioned, you might be better off – as a new, unsigned writer who is looking to be published – self-publishing your work through Amazon (which is terribly easy, truthfully) and building your community wherever it is that you can find a following.

If that happens to be on Steemit, awesome. If it's anywhere else, you might want to look into something like Flattr, which doesn't have quite the complex management issue of Steemit, or going truly aggressively into Patreon.

Being an untested writer is a hard row to hoe, and honestly unless you feel absolutely compelled to be a writer to the exclusion of doing things far more sensible, I can't really suggest it. I'm not sure that there are any public blockchain architectures that would really work well with book publishing because of the issue of complete lack of ongoing control over the content once it's been posted.

For new folks, this might not seem like a big deal. Maybe it's not. But it will be one day if you're successful.