Those vistas do have a nice look. Or at least I like them. I have the lift in my bus for us with a wheelchair for the friend to get in the bus easier. I also call it my slid out deck. How many store bought rv's have a slide out deck?
You really can't use the white strobe on the roof legally so you either have to remove it leave it there and don't use it while going down the road and only use it for when you have a little bad luck on the side of the road and you may have to make it a yellow light instead. If it were me I'd leave it and not use it unless I'm on the side of the road with bad luck. I'd also change it to a yellow light too. My bus didn't have one so I didn't have to worry about it.