I also love the look of full gardens, then when I see a garden with a lot of bare well kept space I like that tidy look also. I think it is a great idea to fill a bed with plants and thin later. I think one of the better ideas for keeping a beautiful garden is to be able to move plants in and out as needed. I have always liked the idea of an alternate garden, or the garden out behind the shed idea, one that is not for display, but one that gets raided when you need to fill in a space and plant the not quite ready for prime time plants.