Add the onion, olives and feta cheese to the bowl.
Whisk the olive oil, lemon juice, vinegar, honey, mustard, oregano, basil and salt and pepper in a small bowl. Taste and see if you need to re-season. Dress just before serving. If you want to dress ahead of time (and store in the fridge) use only 1/3 cup to start.
Just before serving, add the chopped herbs and the final amount of dressing that you desire, and toss. Don't be skimpy!
I state that this serves 6 as a side. It will feed 4 as dinner!
Leftovers are great in the fridge in a sealed container and will keep for a few days. You may need to add some more olive oil and lemon juice towards the end, if the pasta has dried out a bit.
Feel free to use more of the various components as you see fit. Just adjust the dressing to accommodate the additional amount.
If you want to replace the dill with mint, this is great.
Any leftover dressing can be stored in the fridge for a couple of months. Just bring to room temperature before using. In fact, make a double batch so you have enough for salads for a couple of weeks!