In NA Xins stats were:
Week 1 saw 6 picks and 1 ban (with a WR of 67%)
Week 2 saw 2 picks and 6 bans (with a WR of 100%)
Week 3 saw 3 picks and 5 bans (with a WR of 33%)
Giving a total LCS WR of 64% after 11 picks.
EU stats were:
Week 1 saw 1 pick and 7 bans (with a WR of 0%)
Week 2 saw 1 pick and 6 bans (with a WR of 0%)
Week 3 saw 4 picks and 3 bans (with a WR of 50%)
Giving a total LCS WR of 33% with 6 picks
I don't know about anyone else, but I think there is something wrong with a champion being picked/banned 95% of the time...
Trust me, our live design dudes are very much aware of Win Nao. There's a bunch of changes being tested on PBE, but overall what it boils down to is we're reducing base damages and increasing E and R cooldowns to reduce the amount of burst he gets even while building tanky. If that doesn't work we can adjust further.