Wow, I actually loved the mention of Ripple in the list there. Although it's artificial to a certain extent, it was nice to be able to put Ripple in some sort of market perspective as it's such a presence in the space. If y'all want it to be separated from the list as seems to be the case I'd argue for:
1. A crypto currency list
2. An alt coin list that refrains from listing currencies that do not have all the characteristics commonly agreed upon
3. A combined list of alt and crypto

I would also argue that it would add value to define the characteristics by which the selection is made, like Coindesk has put out their prerequisites for their index price: http://www.coindesk.com/price/
That will secure a clean list as it grows imo.

In the future I can also imagine a forex list that basically puts crypto currencies in with normal currencies to see how they measure up. How does Bitcoin fair against the market cap of some foreign obscure currency or the American Dollar, Euro etc. It will definitely help bitcoin newcomers to understand the market better.