[PBE] Less armor on Ninja Tabi instead of making its passive scale over time? Context please.
http://www.surrenderat20.net/2018/03/327-pbe-update-irelia-login-theme.html
It doesn't seem like a good idea to simply nerf the armor, as that hurts Ninja Tabi's longevity. 30 armor is already pretty low for an item slot, but 20 armor in late-game is less than nothing.
And wasn't the main issue with Ninja Tabi that it's passive was deciding top-lane far too much? But then you hit late-game and that 10% effect becomes largely ineffective.
I'd like to hear Riot's logic as to why an armor reduction was picked over making the passive scale up over time.