This condiment can be tailored to whatever dish you are serving. If you are serving a chicken dish with lemon, capers, and black pepper, try incorporating some lemon zest, minced capers, and freshly-ground black pepper into the Raita!
If you like adding small diced chunks of salted cucumber to this sauce, feel free. I recommend salting the diced cucumber in advance and allowing them to drain to remove some of the excess moisture and flavor the cucumbers.