mundo is strong...hell he just got a nice little buff last patch. (or was it the previous?) I would, however, agree that in his case, something needs to be done. His ult is often integral in his effect on a team fight, and by being so easily able to apply GW (and regardless of his current level of HP), this is a massive nerf to the doctor.
Nasus is still absurd...unless specifically countering him and paying above average attention to him (i.e., camping him), which a good nasus almost necessitates, he can spike HARD mid game and take 2-3 towers easily in a single push. Not to mention if you can stack Q competently, he can single-handedly win team fights mid-game. HIS life stealing is almost oppressive against many top-laners, as it leaves them unable to harass him, while he out scales many of them and can potentially influence the map to a much greater degree.
I agree aatrox needs help. This, however, goes beyond GW.
Warwick im not so sure...he isn't very popular, like most of these champs, but I've seen good ones carry. Take map control by skirmishing and 1v1ing, and also completely shutting down main enemy carries with a good timed ult. However, in this case, i would agree the constant GW will gut him. His life steal_ specifically_ is what makes him powerful, unlike some of these others. He will need compensation I am sure. Perhaps an active that immunizes him to GW? That way there are windows of counter play on both sides.
And lastly Fiddle, ahhh fiddle, my man. As crazy as it sounds, i don't see this change significantly affecting him. Yes, it will absolutely hurt him when he tries to drain tank an ADC, and for that, he may perhaps need help. However, imo, fiddle doesn't rely on his W to win fights and the game. He will almost assassinate squishes with his R E Q W combo. The majority of the time during this scenario, an ADC will be either silenced, feared, or running for their lives. The W is icing on the cake, but often is unnecessary to kill the ADC. They simply cannot withstand his ult without proper peel, something a good fiddle will have planned for and positioned for properly.
...
These views are me trying to be unbiased. I regularly play 
and 
. Additionally, ADC is my worst and least favorite role. Im just not convinced these changes are as cataclysmic as many people are suggesting. Let's wait and see shall we? I understand not every champion receives equal treatment (cough 
), but with such a huge roster, it's asking a lot. Not everyone will always be happy, but given that Taric and Poppy are the next reworks, at least i think we can say Riot is trying. It's only a matter of time before the likes of
are addressed.
and 
. They too should be and probably will be gutted for even thinking about combating the almighty ADC.
BAM
is sad that his uniqueness is going away with everyone having GW.. although, he doesn't need to build that item and can instead focus on giant slayer and still have grevious :D
