These job changes will not and can not change your playstyle. The only thing that can change playstyle is the content coming up in 5.0.

The only meaningful thing Scholar lost is Energy Drain as an Aetherflow dump and the occasinal decision of saving an Aetherflow for healing abilities.
What will be the next Aetherflow dump? We'll see (I think at the very least some Lustrates will be needed due to Embrace/Aetherpact nerfs).

What makes healer DPS engaging is the act of balancing your Healing and DPS abilities, not the number of different buttons you press.

Scholar single target:
1) Before: 21111111112111111111, occasinally replace a 1 (Broil) with a 3 (Miasma).
2) After: 21111111112111111111
And Ruin II as a weaving tool.

Scholar AoE:
1) Before: Miasma, Bio II, Bane, Miasma II spam
2) After: Art of War spam

If you think that "1" is engaging, but "2" is a snoozefest, I don't know what to tell you.