If that game did show anything, then how disgusting Kallista can be.
Giants had the perfect conditions for that ap-ez, he wasn't pressured early, could farm up his core items rather fast, only one off-tank in the enemy team, no locket, 4 squishys that didn't built any Mr for the biggest part of the game...
And yet hot dropt off once reksai had some mr stacked and Kallista reached critical mass.
Runglaive finally allows AP-Ez to be viable, but he really isn't op.
And the buffs to ap-items, Ludens, which is the item he rushes after runeglaive, looses 20 ap, so his 2item spike is going a bit down, so untill Rabadons and Voidstaff are finished, those item changes are more a nerf to him...
Really not sure what every one expects from those item changes.
Unless you can either abuse Rylais+Liandriels or Roa+Seraphs, they don't really change much besides maybe shifting built orders and powerspikes a little bit.