I wonder if this would have the same effect without duplicating files:
Open System properties (Win+Pause)
Select Advanced system properties from the left-side menu
Select the Advanced tab
Click Environment Variables
Select Path in the System Variables list
Click Edit
Add ";C:\Program Files (x86)\HOTAS\drivers" to the end of the text in the textbox (no quotes, but with the semicolon beforehand if the box isn't empty to start with)
Click OK
That should include the HOTAS folder in the list of places to look for binaries, without having to put it directly into your system folder.