Alex Savage keeps healers more busy than Final Coil did, not sure what you're getting at.

A1S - Easing healers into overall raid damage for subsequent runs, double-prey + double-buster
A2S - DPS contribution + Preys on tanks + No breaks in the fight requiring good use of MP management skills + no aoe regens for hate concerns
A3S - Digititis trading, Heavying Adds, contributing a lot of DPS to meet enrage check, forced solo-healing section with other healer gaol'd, prepping tanks for tethers
A4S - Eating Discoids, handling Nisi/and-or LB3 managing, heavy DPSing amongst the raid damage chaos, helping with lasers, dealing with low mp for a good chunk of fight if you let dolls blow up