We are all holding our breath as far as the SimConnect API state is concerned: „simple“ variables such as the FOLDING WING HANDLE POSITION (*) are read-only, whereas the FLAPS HANDLE INDEX is writeable - why? Seems like a random decision, from an API design point of view.
((*) Ironically the vars FOLDING WING LEFT|RIGHT PERCENT are writeable!)
Given the fact that Asobo deprecated (made obsolete) all SimConnect events:
https://docs.flightsimulator.com/html/Programming_Tools/SimVars/Legacy_Event_IDs.htm
one can only speculate that the longer term plan is to make more simulation variables writeable (and perhaps add more, to fully replace the event functionality).
But unless you have some NDA you know as much as we do currently.