I'd rather we got more diversity in healing magic rather than tiered spells anyways if they are going that way.

Stuff like:
Short cast, long cooldown, small/medium heals. (emergency heals)
Long cast, high cost, large heals. (Powerful but limited cure bombs)
Low cost, long cast, medium heals (efficient, but pre-meditated healing)
HoT's (supplementary healing)
etc. etc.

Cure 1/2/3 do this to an extent, but there could be more flexibility in healing strategy and tactics if they diversified the system rather than relying on tiered spells only.