It sees to be more or less accepted now that healers are expected to contribute to DPS as much as possible, and I bloody hate that - it's one of the reasons why I stopped playing healers.
However, the reason why I hate it is that healer DPS comes down to "put DoTs up, then spam one button until your DoTs need refreshing"
This got me thinking; since the game's design prioritizes DPS so much, even from tanks and healers, why not take this one step further?
Instead of having healers' healing toolkit be completely divorced from their DPS spells, and their DPS options being as boring as can be, why not combine the two?
I.e. give healers more involved, more interesting DPS skills and have those skills confer healing bonuses and effects. Make it so that maxing your DPS also maximizes your healing output.