So, instead of increasing the varied, this changes narrow it MUCH more.
No more leashing = Bye Bye any exotic jungler (Karthus for example)
Incredible uncompatitive for any rough start jungler (Hecarim, for example)
Simple NO MORE junglers on blind pick or below lv30!!!! Your team need to know how to help you in order to do a proper assist on early blue/red farming... sometimes i get no leash on low levels account theese days, imagine after the changes...
Unless the masteries and runes are completely redone to take all of this into account, we will have to lowest number os junglers, specially on 1500(-) ELO, than we ever had!
The ability to leash was something good to the game, since it allowed for many varied jungler pool.
Theese changes dont make Fiddle better AT ALL, since he is more vulnerable than ever to invades... now if you steal his first blue... he will stay lv 1 forever since he will not have mana and help to level up unless some lane lose even more time helping him on other camps and losing more team gold and team xp.
Champions that already can do well if they dont get a leash will simple do better(Udyr, Lee Sin), the others will fall farther behind...