Yes - mounts can redefine park to mean "take flats" - but then they lose the ability to have park mean "go to the position to shut things down." SGP has the ability to automate both - but it isn't possible if those two locations are different - unless you allow the specification of a special "take flats" alt-az position - and many mounts can do that - without changing the meaning of "park."
Again it isn't a high priority since you can manually move the mount to shut it down - but that would take away from sgp's ability to automate the whole process.
Frank