As a proud ST-1 owner, I feel victorious pocketing the $3000 - $5000 it would have cost me mainly for eye-candy and some gimmicky add-ones. Of course, all of them are not gimmicks, but I can live easily without any of them. I prefer to invest any extra money for items that will improve safety and handling such as an upgraded motor mount, limited slip differential, better brakes and spring set, etc...
But you ST-2 and ST-3 guys should enjoy your extras for the enjoyment of owning and using them. Three cheers to all ST owners for seeing a great deal in a performance hatchback...