This is the proof That Rengar Is a bit Overestimated
http://euw.op.gg/champion/rengar/statistics/jungle This is statistical, not flame without argument
On top of his high ban rate, his winrate the first week after rework is 46% in EUW and 44% in NA. It's a bit early to base his general power on these data but it's a bit early to call him broken too or ask for a nerf, without proper compensations.
the same reasoning should be applied to other rework.
I know playing against this rengar is frustating and way too snowball, but I'm sure Riot will find a way to balance him in 1-3 patches, maybe even giving him an higher skill base. I'm the first one who doesn't love this rework, but I don't think all these 'trash-post' about how broken Rengar is now, will help riot's team to find a way to balance him.
So Remember: always argued and make suggestions Let's be productive!