More about the balancing changes
Tl;DR about the balance changes is battles are going to be lasting longer than they are right now. Health is going up, and chakra/stamina are going up compared to move usage costs so that you won't run out of energy after using 3 moves. Damage scaling and jutsu strength are being adjusted so that also, the difference in power of jutsu from one rank to the next should be slightly less pronounced (yay Genin jutsu aren't completely useless as soon as you hit Chuunin maybe? :D) Once the damage/health values for all the various ranks have been worked out and the jutsu adjusted, AI will be planned out a bit in terms of their length/cost for healing/money gain from AI and the reduction in gains for fighting lower leveled AI. The idea behind this is to make it most rewarding to fight AI close to your level, and make spamming weaker AI only useful for perhaps getting jutsu exp without losing much HP. It's more rewarding and less grindy to do fewer AI battles but have them be harde