Youtube application

Is there ever going to be an update or a 3rd party app for it (or is there already?).

I think it could be improved a lot by adding comments to it, maybe a "view comments" under the related videos" and ability to login to your account. (Not on the mobile youtube on Safari).

I think that would be decent for that application as more could be done that isn't already there so I'm a bit disappointed to be honest.

Thoughts?