You know, I look at the current mastery system and thought Riot didn't want micro-optimizations
https://1.bp.blogspot.com/-IJ90Q9Aviho/Wvzt2XBZTSI/AAAAAAAA_xc/veI8iKh36qMOLP1km6chDxTvTdwvvLSeACLcBGAs/s1600/DdXb9rWV4AActLv.jpg
A while back, before Runes Reforged, I remember one of the devs saying that they didn't want Masteries to be a form of micro-optimizing. But now you look at how the current runes work and there's still plenty of it. For instance, on PBE, the change they're making to Minion Dematerializer (which is being changed to Dream Snatcher) basically just gives very minuscule bonuses in the long run. 3-6 armor or MR? 18-36 HP? 2.4-3.6 AD or 4-8 AP?
[zombie-brand-facepalm]
It's not just with that, though. There are plenty of runes that give you very small stat bonuses that are almost invisible during gameplay. Did Riot do a takeback on what they said about micro-stats?
