I've been doing pretty fine without Level 6 so far. And I usually end the match with a healing spell if I can, just to stay fresh. Viola's the only one I use Harmony Chains with so I can Sacred Strike/Healing Arrow. When I get 3 chains, I could throw in something else though. But even if I did start the match with Echoes, it's not very helpful anyway. Battles already take too much concentration as it is, so I don't feel like adding more to it. It's not like I'm playing this game because I'm totally into it. It's not something I feel like mastering or completing to 100%. I'm just killing time until school starts up again.