I like the complete service; photos, virtual tour if it'll work for the property, flyers, address website, add it to my website, upload pics to MLS. sign rider with URL, postcards. My guy will also make business cards with the house info on it; the seller can promote the listing to their friends/family. He's just started making banners too. If the house is on a well-traveled path, you can advertise the URL, open house date, your phone number etc.
I like my photog to be part of my team, making suggestions of how I can market myself/the property, keeping up with the latest in marketing ideas. If you can bring ideas to your clients of how to make their life easier and market their product effectively, you'll be even more valuable than I'm sure you already are.
Good customer service is a must. It doesn't matter to me how good someone's product is if they don't return my calls or deliver as promised.
Your website is great.