There's really no end to the amount of things you could add to this. I think I'll add some roasted sunflower seeds to this next time I make it.
Now if you're not a fan of broccoli, there are a lot of other salads that you can make. I also make a seafood salad and you can find that recipe here. This goes with just about anything else that I make and Ken loves it so that's a plus for me.