It's the preseason, which traditionally means Riot is out to screw over junglers because the jungle has become a "solved game". What "solved game" means is that junglers have learned how to play their role correctly and optimally. Is this a bad thing? No, you expect every member of your team to know what they're doing in the role they chose. Does it get stale? Yes, but so does every other role.
Jungling actually affords you the least stagnation since you're not chained to a lane getting CS the majority of laning phase. You can farm, you can gank, you can counterjungle, or do any combination of those depending on how the flow of the game is going and which champion you're playing. Jungle is the least stale role due to their gold gen being tied to the entire span of the map and the jungler having to constantly navigate it.
What the changes do is reduce the amount of homework you have to do to jungle (memorize which route is best for what champion, which jungle item is best, which camp to start depending on which side of the map you're on, etc). This is a good thing, since it opens up the jungle role without having to read a guide first.
Unfortunately the changes also mix things up for the sake of change. Adding more randomness to the jungle (in addition to the elemental dragons, which still feel horrible if you manage to grab one and it's a lame cloud drake) makes it more flashy but also increases the confusion and chances of a good play turning sour through no fault of you or your opponent.
What the jungle changes do is decrease the burden of knowledge required to be a jungler (good) by making it so that the optimal path through the jungle changes every game based on semi-random factors (bad). It's like having a boxing match where the ref hands each guy a chainsaw and says "well, we're shaking things up because two guys punching each other is stale". Is it more exciting? You bet! Can it completely screw over the better boxer who didn't know he'd be in a chainsaw deathmatch until it happened? You bet.
Good direction, but bad execution.