I may have a bit of a different perspective than most here, as I never played the CCG. I desperately wanted to like the game because I thought it was cool IP, but there were some elements that were turn offs to me as a potential player. One was, of course, the dated mechanics, but another thing that detracted me from investing in the game was that there were too many clans, so the card pool for a given clan was too thin. I as actually hoping FFG would reduce the number of playable clans to 5. I'm saying this as someone on the outside looking in and with no real attachment to any clan.
As an outsider, I found the inclusion of the Spider Clan incredibly bizarre, as I thought it was suppose to be a game about samurai upholding a set of ethicical principles. Their inclusion in the new version seems in jeopardy because of how honor/bushido is integrated in the game.
The mantis made a little more sense to me, but as I'd rather have minor clans that could be splashed into the major clan decks, as to allow for more variance in deck building within a given clan.