The only problem I see is I didn't get any!
Add about 1/2 tsp of Dijon mustard to your dressing along with a minced clove of garlic - it's amazing what the Dijon does for the flavor. I like a simple dressing such as you made. It's all about the herbs. My suggestions just give you another dressing option.
You may have and didn't mention it but I also would add some salt and pepper to it, white pepper would be nice versus black pepper too.
I also add some olive oil, fresh finely minced garlic, kosher salt, horseradish from a jar, and Worcestershire Sauce to my burgers - just another idea for you.
Another idea for potato wedges is melt some butter with some minced rosemary and garlic and a bit of salt then drizzle on them when plated.
Nice job! Thanks for the pics too!