Originally Posted by MrFwish
Hell, I'd be happy if somebody would say, "Oh, Fiddle, maybe you should time your fears better, just something to work on~"
Or something like "Oh, Ashe, try not to be so aggressive".
A lot of times myself (and others) try this approach first, asking the team to stop pushing so much so jungle can gank, asking people to ward their lanes to prevent them from getting ganked for the Xth time, asking people to play smarter by doing specific things, etc.
But honestly, theres only so much you can do to make your team play better. Any suggestions seem to be an invitation for people to play worse, rage, or be jerks.