But…why not have “total” control of the fan/light through SmartThings? If you only run one pair of wire to the fan then you will only get the control you mentioned above but If you are pulling wire, then why not do it proper? A fan/light combo needs to separate lines and share the neutral. Power is pulled from the switch and then breaks off into two separate switches. From there a 14/3 combo is ran to the light.
The sister dimmer switch to the 12730 (fan controller) is the 12729. There is also the newer Z-Wave Plus switches but I don’t know if the fan controller has been updated yet.
I would even go as far as putting a 3 gang box in. Leave the outlet switched (smart of course) and make room for the two additional switches.
I rather say, Alexa, turn the fan on medium. Alexa, turn the light down to 20% vs Alexa, turn the light switch on, grab the remote and control things manually.