SMTs are going to tokenize the Internet; SCOT everything else.

SMTs fit into a small box.  It centers around the content/reward system along with a tie into to the resource credit quantifier.  Hence, anything created using SMTs mirrors STEEM along with using the same resource credits for each operation.

Anything that does not fit into that box has to be a SE design.  For example, you cannot create a token whereby one can receive recurring payments using SMT.  That is outside the scope of the protocol.