I will actually agree with you in that by the 80%/20% rule, this is 80% a content design problem and absurd level of scripting to the encounters. And I've seen the "combat medic" players satisfied to the detriment of the players who want to engage with the healer role by actually having to heal for long enough. The scale is already stacked on one side heavy enough, thank you. It's time to start putting some weight on the other. If you're bored by the lack of DPS options in the class, it's because you're being given long enough time of not focusing on your role's primary responsibility to get bored by it.
Nothing will get fixed by healers getting more DPS buttons. Nothing. All you're doing is pushing out the problem another expansion, possibly two. 1-2-1-2-1-2 is no more engaging than 1-1-1-1-1-1.