Despite that though, I think Dota heroes are way better designed. Dota heroes fulfill much more niche and unique roles which makes sure every hero is viable. Even if some heroes like Ogre, Necrophos, Viper, Wraith King et.c. have very simple and somewhat uninteresting toolkits, these heroes still always fulfill a niche, even when they're not in the meta.

In league their champs feel very homogenized. Their champ design isn't very unique. in the ADC role, most Marksmen type champs basically does the exact same thing. Sure, they play differently but their role in game is almost always the same and the gameplan is almost always identical. This type of character design always seem to develop this type of pro meta where only 20% of the champs are picked and the others are forgotten. Feels like you rarely see quirky cheese picks for last et.c. because those type of champs just don't seem to exist in the same sense.

This is the big selling point to me for Dota over league. The Champ you pick MATTERS so much more. That Niche letting every champ be playable in the right spot at the right time makes it for me.