We will see as more come out.
The issue is: the kekkei genkai system is not easy. it took months to build the foundation of code.
the balancing is delicate...
But it should be slightly easier now that there's an understanding on how to do it, no? It will be easier than last time.
Good thing though, atleast players will have enough time to master their current KG before getting a new one. Though.. A few people are about to get their 4th reset as it is and 2 players that I know of have already got enough DKs to reset once and are about to get enough to reset again =\
None the less, there should be time to discuss one what the plans are for the future KG unless I'm mistaken. But as I think was stated, there should be KG and unique abilities that you chould choose from when you reset. I would say you can have only one KG and as many of the abilities (8 gates, Chidori if you do it, maybe some unique sword techniques like Dance of the crescent moon, Wood release, and so fourth.)