Holy hell yup. I'm totally into Vindi healing, but 100% what you've said is true, it hurts that they've completely ignored half of the spec. I get that some might be worried of Vindi dps turning into potential juggernauts/tanks in some modes, but at that point you'd just have the skills more drastically tuned for healing power (lower base but higher healing power multiplier).
Alac feels like a better choice, and I wouldn't mind if it means we get our CD's increased because of it, but at this rate i'll take either.
Urn also feels incredibly bad to use considering the boons you get, for the duration, and the HP you have to be at to achieve it. I would almost prefer Urn to pulse Barrier instead of healing, and make it cost health that bypasses shield. The rest of the kit feels good, its just the lack of important boons and the elite that does nothing to encourage players to play with its mechanic.