Its not about being opposed to the extra damage... Its just that none of the keystones really fit.
Aery/comet doesn't hit the spot for enough damage.
Nothing in the adc tree really works.
The domination tree is cool, but electrocute is meh, dark harvest, ok?
Predator is pretty cool, but it only allows me to get that first hit off. I have to bonk them 3 times to kill them, which means that its still a game of getting peeled off/cc'd/ mobility away after the first hit.
Inspiration tree is kinda iffy. Sure glacial augment, but then you have to touch them, which is already the large issue he has already. Changing out summoners from ignite/exaust to tp or smite is minimally helpful, and lol on klepto...
So that leaves the tank tree, you have garbo grasp that doesn't do much because mordes low base hp, and the 5 hp doesn't add up enough to be meaningful, You have the one you can't even use, and then there is guardian, which only works if you are ontop of your ally... So yea...
Also, unlike a true rune system, you can't mix and match either, so really this is just a mastery system anyways. XD
I'd love to do a page that doesn't even have a keystone. Get Triump, overheal, ravenous hunter, conditioning, revitalize, and celestial body.