The Draenor perk system has been changed to only grant 4 perks on your way from 90-100 (down from 9 perks). Most of the damage boosting perks have been baked into their respective spells, but some perks have been removed outright.
I’m not sure why this was done to be honest. After leveling a lot on beta (one hunter to 100, one to 96, at least four to 92), I have to say that getting a perk every level was a lot of fun. I enjoyed watching the perk slot machine spin up and went “hell yeah!” when I received a perk I was hoping for. It was a nice reward for dinging a new level, and it was also a noticeable power increase in most cases. The power increase was great because it counteracted the feeling of getting less powerful as your haste, crit chance, etc. plummeted with each level.
There are a few other minor changes and additions we’ll cover before tackling the perks. I’m skipping the datamined ability scaling changes since they’re all related to the perks going away (no actual change).