That's because AG3 is still in beta. They've obviously not added rating or commenting, and the profile page is to just give you a look at what they're doing to it.
I have an idea! How about a Armor Games chat service, it could be integrated with a clan system. You could have groups to. It should also be on iOS and ANDROID . It could also include the forum and blog.
I agree but for those use the beta version on a daily basis it might be nice...
A daily use is imo not what they want. Your main side (for playing games and talk to your friends etc) should be still AGv2, the AGv3 beta is more a testarea (so its not fully performed which may cause lags and other issues). They show it so you can get a lil feeling/impression of the new look of AG, but nothing more.