ArenaNet:Guild Wars 2 suggestions/Character/A companion for healers

Healers
Currently, healing is often a role that is difficult to play, because there is simply not enough opportunities for levelling by healing in MMORPGs, unless you join groups. This was not an issue in GW1, but in GW2, it would be preferable if healers could solo, that is, if they could level by keeping a companion alive.

The companion might have increased damage but lower survivability to compensate. Its energy might also be fueled by its health, either if it gets healed it gets more energy, or its more powerful spells are draining its life. Thus this companion would complement well healers, while not being that useful to non-healers.


 * Why this could work
 * Allows healer to solo and level while essentially playing the role they wanted to play all along.


 * Why this might not work
 * The companion might not be well-balanced. It might be too easy to kill it, or it might be too effective.
 * It might be fairly easy to use it with non-healer classes, thus not putting healers on a level playing field with other roles.
 * It might also be ill-suited to the player's playstyle. I suggest two companions, one is ranged AoE caster, the other is melee DPS with higher armor.