a galacticopedia shouldn't contain only information about tech tree. in my opinion a galacticopedia which contains also informations about buildings, projects and core aspects of the game could be very good.
if stardock could introduce in galacticopedia history about major civilizations and minor civilizations (which we don't know nothing about their history) it would be a memorable job from developers which all customers should never forget.
anyway i prefer a galacticopedia very well done which could be downloaded after months, instead of a galacticopedia not so good because rushed.