Well, I started out with that b/c I was selling Amey Strike to those people who are very fond of the Radiant Servant tree and the Aura--like you. I also provide Aura, Burst, and Amey Strike on the default versions of the enhancements on the builds I offered for the same reason.
The thing is, on a battle cleric, the Radiant Servant tree also comes at a *huge* cost in terms of ap, b/c you rely very little on heal spells, and that is pretty much the main thing that benefits from all those points you spend in RS beyond the burst and the aura.
So, on a battle cleric, the Radiant Servant tree is frankly a bit overrated. Everything except burst on the way to the aura is useless!
At least with Amey Strike--which I think is far better than you are making it out to be--as I have shown, you can get some useful things for a battle cleric along the way up the Warpriest tree.
So what I've done in other sets of enhancements is to forgo the aura and retain merely the burst, which costs only 11 ap (and you can get endless turning from Divine Crusader), then take Amey Strike and put all those points you get from giving up the aura into other trees--which are now also open to Tier 5 enhancements since you dropped the aura. That eliminates any overhealing issue--which I don't think exists anyway--as well as removes the insecurity of relying entirely on Amey Strike, since you can always revert to bursts when necessary (especially since you are now not spending turns on the aura).
EDIT:
I just wanted to add that we are now both assuming that someone will be multi-classing. Whereas, in the post you are responding to, where I showed how you can get Amey Strike w/ no complaints along with Burst and Aura, I left open the possibility of going pure (for example, via h/elf w/ scimitars).
The point: If someone goes pure cleric, the only other cleric tree they will have access to is Divine Disciple, and how are the enhancements in that tree going to benefit a battle cleric that focuses on *melee* presumably using STR rather than WIS? It only makes sense then that they will put points into Radiant Servant and Warpriest. However, what you can still gain from this discussion regarding a pure cleric is that you might want to go Tier 5 on Warpriest rather than RS . . . especially on an elf . . .