I would like to second Oconnor's response. People need to focus their builds, yes you can combine the skill trees, but unless you are only taking cc/utiltiy from a non-complementary tree, you shouldn't. Focus on complementary trees and pay attention to ones that have good synergy.

As Oconnor stated, 3 trees with different stat focuses is going to be sub-par, even if you just focus on two.

Drakiis is going to have the same problem. You will be going Agi for archery and Int for Sorcery damage, you will end up with low damage on both or one being useless. Choose your play style and switch up one. Like drop sorcery and pick up Auromancy/Defense, both have great utility spells that you don't need to raise int for but make you a better archer. Or go the other way and drop Archery and pick up an Int school for damage, making Shadowplay your utility school.

As always, play what you want, I just think having a good build is essential. Focus is the name of the game.

Player of Revco