Bad sprites

I realize that in my zeal to put a sprite down for everything in the shops, a few of them are rather bad or more like horrible. I'm going to put up a list of the ones I think could use some work, for everybody to try on. We're real socialist here, everyone helps!

Minefield
Perimeter Wall
Trenches
Dish
Hillock
Extended Range Laser Cannon
Gunship Heli
Dracken E / Petite
Federation Transport Craft
Riah Patrol Ship
Jupitoris
Cargo Ferry
Cargo Airliner
Pilots across the board