Perhaps codification (the canon) was the beginning of the end for Christian creativity.
Or it would divert creativity to other literary genres, such as scholarly commentary (the more scholarly the less creative perhaps) or popular hagiography.
TopHat,
You will find a lot in the links I provided on the top of this page (especially the Pseudepigrapha section at www.earlyjewishwritings.com). About early Christian literature you can check all the non-NT texts on the other site and, for Gnostic Christian writings, http://www.gnosis.org/naghamm/nhl.html. On the canon you can start with http://www.infidels.org/library/modern/richard_carrier/NTcanon.html