A feature the I use all of the time that most either don't know about or have forgotten is the Empowerment table. I can't tell you how many players try to correct me when I say I need to craft a quick empowerment by saying "they're enhancements".
My all time favorite empowerments are the Increase Attack Rate (20% recharge boost), Grant Invisibility (the name is misleading as it gives you stealth rather than allowing you to stealth team mates), and Knockback Protection (in the early levels before acrobatics is available or for when you need to put off taking it for a while).
