Personally I'd prefer everyone to have access to reliable and short-cooldown self-sustains (Defensive CDs, self-heals, etc) rather than dependent on a healer to keep them afloat. The huge dependence on the healer for survival is why healing is such a huge responsibility and a source of stress. Perhaps healers should be nerfed on their healing, but get compensated for more offensive spells and/or party buffs, making them more of a supportive role rather than dedicated healing one. This adjustment would allow greater autonomy on the battlefield and encourage roaming and 1v1 (or 1vX) in frontlines.

And yes, I stole this idea from GW2.