Unless I'm missing it, there isn't any ranking system for Domination yet. A few thoughts:
In MA, the original wargaming.net ranking system didn't work that well, because it was more an indicator of experience than anything else.
On the other hand, I think the alternative ranking system at massiveassaultnetwork.com does a good job identifying the best players. Well, at least it rates me highly!

But seriously, Rocklizard, Pitor, Shura-by, etc. are at the top of these charts and are also some of the best players I've played so far.
Still, Glicko has the most interesting "breakdown" so you can see how every game affects your overall rating. I wish the other rating systems would do something like the game-by-game stats as in Glicko. I think Glicko is okay overall (it sounded good in theory) but it acts so strangely. For example, when I beat a really difficult player with a high score on a map I am sometimes awared very few points, but when a beat a new player I might be awared more! And it just doesn't seem to be consistent. I could give a bunch of examples here where the Glicko numbers didn't seem to reflect the reality of skill required.
Anyway, those are my thoughts on the ranking systems in MA, what do you all want to see in a ranking system for Domination?