Riot has been an okay company. I used to view them as much better than other triple A game making companies, such as Blizzard, but their recent activities have disappointed me.
I like the communication on the forums and the frankness of their staff. However, it's quite clear that they're really trying to milk the cow with the last few events that have been going on. The two most recent events, Halloween and Christmas, have been filled with rewards ONLY available through some kind of RP purchase/use. It's disappointing to see how, still, champions are always released at 6300 IP and how they've even created a 1350 RP skin tier. I disapprove of their decision to put Diana on sale and then nerf her right after; rioters can sale all they want about how the nerf was expected but it's very obvious they wanted to get the most out of Diana sales before the next patch went through. And, no, I did not buy her nor own Diana. (I do think she deserved a slight nerf)
I'm sure there are a bunch of promises that Riot has not kept, but, of course, it's impossible to keep everything perfect. I can't say Riot is an amazing company but they're certainly not bad when compared to the despicable family of Blizzard and some would argue EA.