After spending a lot of time in Tacvi and Anguish recently, I am of the opinion that the two spells shamans have for healing are not adequate in situations where a shaman is called on to be the main healer for a group. The highly restricted ability for casting group HoT's do not constitute a valid solution to the problem.
I believe that we need two addtional spells:
1. A fast heal spell similar to for times when damage occurs faster than Wilslik's can heal.
2. A group heal along the lines of or more realistically, something like
I think a group HoT is fine and would help a lot, but without the two tools above, I think shaman healing will only be limited to spot healing.
Having these tools will still not let us out heal a cleric, but would bring shamans up to speed with the higher level content.
And to head off any flames, I think druids would benefit from such spells as well.