I think it is actually quite a good introduction for new players. For more experienced MMORPGers it does not have the huge amount of things to do that other established games do.
With this in mind though, the game is only three months old and these types of games get considerably better as times goes on and updates are made. This is particularly true of Asherons Call as an update is made, with new content, each month.
If you would like to try out what this type of game experience is like then AC2 is a good place to start as it is fairly simple. I have been playing the game since late December (I got the game form eBay) and still enjoy it. This is really only a holding action though until the release of Star Wars Galaxy.
"So Shines a Good Deed in a Weary World" - Willy Wonka