What if we shoehorned Kog'Maw into buying Triforce again?
A lot of people bring up that Kog basically becomes a W turret once he gets enough items. Anyone who knows what I say here will know that I don't object to that per se. Regardless, the old ADC Kog'Maw was a pretty wonky champion, a jack of all trades that slowly turned into the king of all as time went on, which is fun.
The game is in a very different state from what it was when Kog had to build himself up from on-hit items to crit items (well, IE), he now skips the "building himself up" and sometimes even the crit items.
The obvious solution is to give him base stats that synergize with Triforce AND NOTHING ELSE:
Higher base AD and base AD per level, (much) lower AD per level for Sheen.
In order for him to get synergy with Phage, is it best to lower his base MS and HP or to increase it? Any suggestions?
To get better synergy with CDR, lower base damage on QWER and higher CD on an essential spell (so, W). And should his base mana be in- or decreased to provide incentive for him to buy mana? This is starting to become a trend. But since he's an ADC, it's ok to mess with him like this.
I'd've suggested nerfs to some other stats (in other words, his AS) and those might still be necessary to stop him from rushing Wit's End, Runaan's or Rageblade but otherwise, I'm done here.