@Riot - You ain't slick
So the Hextech Crafting system looks like a great way for people that generally don't spend money on the game to get some free stuff. I think that's excellent. It's really not the kind of thing a free to play game usually does, and Riot should be commended.
But hang on a second, from what I read, you get chests when either you or somebody in your premade party (more on that in a minute) achieves an S rank after a match. To which I refer you to the image I linked of my most recent support game with Taric. Game ends at 26 minutes, I'm at 0/1/18, and all I get is an A rank.
To put it in perspective, here's a game from about 4 months ago with support Tahm.
http://oi63.tinypic.com/vy8gsg.jpg
Game ends at 20 minutes, my score is 3/0/10, I get an S rank. Is it just me, or has achieving an S rank been made deliberately more difficult so that people don't get chests for free nearly as much as they should.
And another thing, people that are in premade groups are going to have a higher drop rate for keys after winning a match. That just straight up punishes people that play alone.
So no, I don't think Riot is as generous as they seem with this new crafting system. Right now, it seems that Riot is demanding absolute perfection if you want to earn a free chest. Not to mention they're also demanding that you have friends to play with if you want higher drop rates.