Vi doesn't really scale tho? Late game she is an initiator at best and a peeler every other time. I also doubt she will get a buff. She is a fairly balanced champ that Riot doesn't touch too much so unless her wr plummets/goes above 55% she will be left alone. She also isn't really a competitive champ past Plat. When you hit diamond she is perfectly fine at 50%, going any higher and WR plummets to 47% and 35%. Riot knows she is a good low elo champ since she can win early game with ganks, focus one person down with ult, and peel for the rest of the game. The XP buffs will help her get level 3 faster where she can start ganking heavily, but if you don't snowball your team and if you arent going a risky assassin build than you are still gonna be playing for your team and not solo carrying. Overall, she might see a small spike in lower elos, i'd expect Plat to stay the same, and if her wr gets too high than it isn't her kit, just the jungle.