The management of a blog and always have it online, requires certain skills and time that sometimes I do not have, when I paid for timeets I was happy because the technical part was "attended" even if it was a subdomain I was happy.
And that is what I mean, if there is any plan to someday offer the host service, it does not matter if it is a subdomain, but offered by you I would use it and pay for it, with full confidence in the project.
It's more likely that we would partner with a third party hosting provider to offer an all-in-one hosting + SteemPress setup service. At least we don't plan on doing it all ourselves just yet.
Personally, I would recommend Fastcomet as a hosting provider. Their 24/7 support is awesome if you need help to get started.
But it's cool to hear that you would pay for such a service! Noted:)