I have found that most of the classes can take a pretty good beating, but everybody needs some healing every now and then.
So what I am trying to say is that no matter whether you are support or what, you should be able to take a beating. No matter what class you are, there is no disability in your protection skills (now a Guardian gets better), and you will probably need some healing skills; say if you can't find anyone doing the same thing that you are doing and you have to Solo.
When grouping, everyone should be able to help each other out. I have three characters that I play grouped together, and all three have good protection skills (mostly high suiting) and all three are capable of healing, as they have an equal amount of healing gems and DoT gems.
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