I agree with astralprojection to some extent. My interpretation is that probably there is a desire to "not sound like full-on" which is so strong that the mixing/mastering ends up getting quite thin. With the new Khetzal I literally checked my mixer console if the mid-eq knob was down to -6db or something. It was not, the music was supposed to sound like that. For the new Filteria it's less pronounced but the phenomenon is still there.
This aside I think musically there is some very good stuff here and in general it's just nice to see the old heros back in action.