Buffing and breaking make DPS easier. If your DPS units are taking less damage, that means fewer turns are needed for healing, so your healer can do some other buffing, or even some damage. Heck, at least in the early game, you could run a bard as your healer and support, who on off-turns could also deal damage, then use three dedicated DPS units. That'll help you out with your desire to see big bonks.