Just want to let others know I'm a casual healer, haven't healed in Extreme Trials or Raids as a healer.
Now having said that, I think there is a possible alternative to having more dps actions to healers.

Lets use WHM as an example,
Cure 1 upgrades to Cure 2. Freecure trait is deleted, and MP adjustment to Cure 2.
Medica 1 upgrades to Medica 2. Healing potency has increased and also has a regan effect.

With more healing actions replaced and more simplified, there is more room to add in more dps actions.
Basically the healing kit will have to be more simplified and the dps kit will have more depth.
This also makes sure there isn't no button bloat issues later on.
I hope this something the development team considers, but this my opinion on a solution for healers to have a more interesting dps kit. Curious what everyone else's opinions are.