Originally Posted by lagNZ
so? Ezreal is an ADC, why should he get to viably build AP Mid?
Ezreal was originally AP mid. Katarina was originally AP mid. If you want a 'fairness clause' on why Ezreal can build AD but Katarina can't, you can't have it. Ezreal's AP ratios were nerfed, the heal on his W removed, and he was forced bottom to not be considered a troll pick.
I said it in my post, but I'll reword it.
Trinity Force used to be ridiculously overpowered. In order to make hybrids viable, Riot gave them this extremely powerful item (a good joke was the guy who did the champion spotlights, Phreak, would build a Trinity Force on 9/10 champions without even realizing it). As a result, you had nerfs across the board to hybrid characters. Ezreal, Kayle, Katarina, and Jax were all nerfed substantially as a result of Trinity Force (and their specific kits, as well). Trinity Force, as we all know, was nerfed eventually. The hybrids kept their nerfs, keeping Ezreal bottom and Katarina mid forever.
Now, you could argue that since Trinity Force is balanced now, buffing the hybrid characters seem plausible, but we've seen a rise in people realizing the high base damages of hybrid characters makes them a good target for HP stacking. This is a balance issue that buffing AD (talking about Katarina here) would do nothing but cause problems for.
Furthermore, as I stated in my original post, I can almost guarentee you would see Katarina build 2-3 Bloodthirsters and a Trinity Force/Iceborn Gauntlet. This would just be stupid and I don't want to see it happen.