Yes I understand your spec does things in a different way. Since you worked on your own to design something, and there are always different ways to get to the same goal line, it will clearly be different in terms of details such as the names of the APIs.

What I'm trying to drill down to are the core functional differences that can bridge the gap because I think there is near zero probability that the Steemit devs are going to implement your spec, but actually decent probability they might be convinced to make some small functional changes to enable the same or similar use cases.

For example, having data storage areas seems like something might be possible to go into even simple SMTs. If it goes in, many of the uses cases you have in mind will be enabled, if not using the same APIs that you specified, etc. If not then those use cases won't be able to use SMTs (or certainly not as easily)