Do you have a wall that is low enough passersby or onlooker can still see over? You don’t have to go to the expense of having the wall raised. There is a lot involved in adding a couple more rows of block and then matching the stucco and paint.
Instead why not consider a custom, one of a kind wall extension. Designed to fit your location and style of your home. Mountain views, then extend your wall with a mountain range of your own.