About niches and viability
Ever since the Marksmen update, Riot has been trying to push champions into individual and unique strengths or the so called niches, this is healthy for the game environment since each champion has a reason to be picked... the problem is that when every champion has a niche, there will be some of them that aren't as useful as others.
Take 
for example, Corki happens to be the champion whom I feel the most comfortable with, I picked him up back in season 1 when they gifted UFO Corki and spent a crazy amount of time playing him all the way from season 1 to at least season 4 mid season 5 until he started to loose viability or stay behind balance wise. I'd love to call him my main but my champion mastery says otherwise and the reason is the following.
Corki fits his niche perfectly, a little bit too perfectly actually, meaning that there is no reason to pick Corki unless your whole team goes AD and then, ONLY THEN, Corki becomes a true powerhouse on a team, but on a regular comp or even a pure AP comp, picking Corki is simply a handicap. I want to play Corki on every single game, I really do, but I know that statistically my chances of winning with say 
(mastery 7 with 70% win rate) are much MUCH higher than with Corks. I don't think Corki needs buffs but he needs to be more flexible.
This thread isn't just about Corki though, because I know there is a lot of people out there who are in love with a champion that fills a small and almost unnoticeable niche, but Corki happens to be MY case. Of course there's also those who simply power through with tryndamere Mid or ADC but objectively that shouldn't be the norm, it's ok to love a champion but being flexible yourself is important too especially with Riot's current design direction.
My complain is that there are champions whose niche is too broad (I can fairly say that I can pick 
or 
into ANY matchup and my chances of winning are heaps over picking Corki) and champions whose niche is too narrow...
thoughts?
