Defining that "broad spectrum of users" isn't quite so simple. Some users want a photo sharing site like smugmug, others look towards sites like Facebook, others want a Hot or Not website. Many want just what PhotoPost provides - a forum-like structure to which post images. Others want a simple gallery (fortunately we provide templates for the last two types).
As for your list, I won't disagree that some of those items could either be useful or be further developed (although #2 has been an option for a long time - you can set the album cover of an album). #3 is just saying that there is a feature you dont care for (and dont have to use) - many asked for this exact feature, so we provided it.
http://www.photopost.com/forum/1237765-post19.html
What a great example of a post from a customer who is happy with their support. I post this simply as an indication that not everyone feels the same about our support. When you have more than 10,000 customers, well, lets just say I haven't always been happy with the support from vBulletin either.
As I said, I do think some of your suggestions are good ones - since no product is ever perfect, we are always looking for feedback to find ways to improve our product.