Yep always good to attract the punter - if it is my V8 they gather round with comments like it was made like it - or if you have the little engine - its " ooh look at the room you have to work on the engine
Don't forget modern engines are covered in plastic and pipes
I usually do a stint with the bonnet shut so you can appreciate the front of the car and better for photos - then have bonnet open to draw more interest