I doubt that SmarterTools will ever create a "Remote Control" feature, that is a whole different service all together. But there are services out there tailored for "Remote Assistance". I used to use LogMeIn myself (at an individual level, not for wide-support), recently I terminated my account because their service price changes became cost prohibitive for me.
Have you looked into BOMGAR? That have "embeddables" and "APIs" that can be used to create links in your own website (like SmarterTrack) that customers can use to initiate remote support requests (https://www.bomgar.com/remote-support/features#embeddables).
Hope this helps.
- Ben
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Ben Santiardo, Senior Programmer Analyst
Eastern Suffolk BOCES