We have two raised beds and I try to keep it simple too. I will probably do pretty much the same as last year -- one of the beds I will plant 4 heirloom tomatoes plants and 4 herbs (definitely parsley and basil, I have done a few different ones for the other two depending on what I feel like...). The other bed I will do zucchini and one other plant.... Depending on what I feel like on market plant buying day.
Last year I did romaine lettuce which started out amazing until the bunnies chewed through my fence. So I won't do that again...