Yes, I do have more mods coming, Aeromyst. Like you pointed out, making the seat fit better. I'm getting it remade by a motorcycle/motorscooter seat specialist kind of guy in San Antonio. He has a foam that seems to be generally better than memory or gel. And I'm getting the middle panel of the seat in a deerskin/bronze colored leather that matches the tan/bronze accent from the factory.
Right now, I've been on the road a bit, so I have the tall backrest that a man named Jac Vinson makes here in Austin. He has backrests for just about all the maxi scooters, the X500 was the latest.
I'm considering changing the bars to a pullback style with 1" riser, but don't want a lot of chrome, so still thinking on that.
I couldn't tell from your post if you have an X500 there in your scooter menagerie.