[Ironhawk]

Norfleet defenitely had an excellent grasp of dom2 gameplay mechanics. But I guess his desire to win consumed him and led to cheating and for that I shed no tears at his departure.

Getting back to Pirate's original question tho:
As far as I know, not much has changed in terms of gameplay. Some of the patches have changed the values of certain pretenders (the VQ point increase comes to mind). Additionally, Zen has released a series of great Balance Mods (pretenders, spells, scales) which significantly alter pretender choices and research.