Is there a complete list of all the features or some kind of complete guide at the level of detail as phpBB3.0's?

like this?
www.phpbb.com/support/documentation/3.0/

I know we have a wiki page, but it seems to be blank...

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This is a very good question. There used to be one, which was easy to maintain when the program was still young, but now there are so many features that it is going to take some serious work to create one that is up-to-date.

I am going to review the link you posted, it could be a good start...!

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