Perhaps. There's also WoWRoster, but I don't use that either. A key thing to remember here is that just because it's prettier doesn't make it better.
Consider:
With that program, you can see items with as they look in-game with their icon, however, that means, in order to see what you're looking at, you need to hover over the item just to see the name of the item. Good design for in-game interface, but poor design for a website. with a website, it makes sense to see things.
Ultimately, it's a completely different system than is what this uses, and simply asking to replace functionality with another application isn't going to be granted. I don't know to what degree that is even dynamic, if it doesn't use database, then it's not dynamic at all, and generally useless. Regardless, there's no feature that that can have that the GuildBank mod can't have. The question is whether or not it's worth implementing.
You are free to suggest certain functionalities, and I'll give them consideration, but requesting DKP to completely change it's Character, Guild, and Profile management to another system isn't going to work, I'm afraid.
is it better to be able to view the icon and the item stats when mouse go over the item name?