Hey Scott...that shed/cover will keep your trailer looking as nice as it does now, for many years. It may take a little away from the yard, but gotta say...that is still a great looking yard too!
I'd put mine under a similar cover, but metro rules won't allow it. It is parked on it's own concrete slab, next to driveway. Okay for now, due to concrete. No parking anything in front yard if on grass or dirt.
I'll get on the tall ladder once in a while, when temps warm, to push the wet snow off with a long handled broom. It really cleans the roof off nice, as I seldom wash the roof.
Jerry