As long as SMT's are not here we can't be sure if they will work indeed. That is a risk I guess.
I believe they will work and will come out this year and I'm sure Appics believes this as well.
As a project, you can, of course, decide to wait for SMT's to be released before you develop anything for them but then you will be behind when they do come out.
SMT's will increase the value of STEEM because SMT's require bandwidth on the STEEM blockchain. You need Steempower to 'pay' for this bandwidth.