As far as subclasses go the cleric ones get a lot of press but I don't think they are so much better they devalue the previous ones unless they where already on the bottom of the pile. Peace is probably the worse offender due how it's abusive as a dip.
Well the heavy armor is kinda a head scratcher IMO. Even of it's a wash power wise.I guess I understand the "overpowered" argument, even if I disagree with it, but where are you pulling the "no-coherent-theme" thing from? It's pretty obviously a guardian-of-the-night concept.
I just nerf the darkvision to 90' and call it a day.