Kakashi would likely still be my favorite character if he lost all his limbs and was struck blind, deaf and dumb. It is his character, charisma, kindness, knowledge and wisdom that I find compelling and that inspires me, not his jutsus.
And for all we know, he could still have his jutsus. Stealing an eye doesn't automatically erase someone's chakra or technique. He used his sharingan to copy and learn techniques, not "store" them. And he was going blind anyway while it was starting to harm his body like it was doing with Madara, Itachi and Sasuke. If anything, losing the eye saved him. Kakashi's a prodigy and a genius with chakra and technique. He could probably learn sage mode.