One of the things that it's talked about with regards to adding more skills to Healer Dps kits is the addition of 1-2-3 combos.

And it's not a well recieved idea, for the same reason consolidated unbranching 1-2-3 combos wouldn't really change how DPS classes are played. You just still hit one key after the other. In terms of game mechanics there is absolutely no change. In terms of manual output of commands it takes a smidgeon of effort from the part of the player to keep track of which part of the combo they are in, but other-wise there isn't any meaningfull decision making or strategy in it.

That's why most healers reject the 1-2-3 combo idea as a way to make their DPS kits more interesting. It's because it ultimately changes nothing, being consolidated or otherwise.