@Riot Small-Donger suggestion for Mage update
What are his problems:
- His turrets can get 1 shot by almost anything, be it AA or ranged ability
- Falls off really hard late game
- He needs to have his 3 turrets set in order to be able to do stuff in lane
- Worst mobility in the game due to turrets, what makes him unable to roam and extremely weak when caught out of position.
Simple change: Making his Turrets have ward-like HP. Hit Points: 2/2/3/3/3 Regenerate after 6 seconds of not taking damage.
What would this do?
In lane, it would take basically the same amount of hits to kill a turret, but would prevent AoE to completely obliterate all of them.
Also would make easier to balance what counters 
instead of "anything with a ranged ability or AA counters him"
Late game, it would make fall off less hard (though their damage still falls off), as his turrets last nothing in teamfights and can be 1shot by any adc.
He would still have the worst mobility in the game and the rest of his weaknesses, but now there will be an actual counter part to them.
As a sidenote: his turrets's AI, need the Zyra treatment.