MSQ Difficulty and Exclusion

[Omedon]

I'd argue the exact opposite. The MSQ would only require you to have maybe 2 healing spells

Oh there is absolutely a button bloat problem for healers, you won't get an argument from me there. There are so many niche buttons per healer job that none of those powers can really justify their existence, because of how niche they are. You can't have a "wrong healer" for 4-person content, after all. The answer isn't more damage buttons though. I don't know what the answer is, but I know that healers are kind of in the position here that both tanks and healers are in other games. They gate the queues, they are in demand to make the game work, thus it must be approachable and, by extension, easy. Ideally they heal more than they do damage, but that's never going to be the case in solo content. Again, I don't know what the answer is, but it's not complicating their secondary role as a damage dealer, because that creates big problems when they group up with other players again.

Now, if the MSQ becomes 100% non-interdependent, you do reach a point where everything beyond, everything with other players can be flagged as "at your own risk," and there are ways to facilitate that... but that is a point on the side of making the MSQ inevitably easy, which, well... healers: check!