We need some of the perks from the D1 defender back, like heavy kills have a chance to generate an orb, defensive strike kills have a chance to generate orbs and/or as ward takes damage generates orbs. With how Aeon Safe/Soul/Swift works you could have a interchangeable exotic that works the same where to change it and has those effects. I miss using something like Thunderlord or Super Good Advice and making 60 orbs a strike.