Erm. That whole blink thing you just brought up is SUPPOSED TO BE THAT WAY. It's in the lore. Warlocks had magic, and hunter barrowed some of it to fight the ahakamaras, giving them Blink powers, Ect. While Titans stayed back and protected the last city, and built the wall. So the Titans didn't get magical powers And also Titans do get something like blink with the twilight garrison