They try to define "conscious content", "conscious attention" and "conscious awareness" in their system (pages 6-8) -- but nothing really convincingly says why a system with this architecture should have an inner experience, i.e. I don't see an answer to the hard problem. I think this is a feature of a lot of models of consciousness that have some "theater" concept -- they just narrow where consciousness happens without providing a complete explanation.

I'm not convinced.