I always though that favored soul was an interesting class, so I made it into an archetype:
Saves: All your saves increase on the 'good' progression (i.e., +12 on 20th level).
Skills: Replace Knowledge (Nobility) with Fly
Spells: A favored soul need not prepare spells in advance. Rather, they get a more limited selection of spells, but can use them spontaneously. Use the Sorcerer tables for spells per day and spells known, but you still choose your spells from the cleric list. This modifies spells and, obviously, supercedes the ability to cast heal or inflict spells spontaneouly.
Patron's Favor: You choose a cleric domain or sorcerer bloodline. These must be standard domains or bloodlines; you can't choose a subdomain or a bloodline modified from an archetype. You get the all the granted powers from that domain or the first three bloodline powers from that bloodline. Either way, the bonus spells are added to your spells known list (You don't get the bloodline arcana or the 15th & 20th level powers if you choose a bloodline, and you only get one choice, even if you choose a domain). This replaces domains, but you count as having the chosen domain or bloodline for prerequisites and requirements.
Inner Focus: At 1st level, you get Eschew Materials as a bonus feat. Furthermore, you are always treated as having a divine focus, regardless of what you actually have on hand. This replaces the Channel Energy class feature for level 1.
Bonus Feats: At 3rd, 7th, 9th, 13th, and 19th levels, you can pick a bonus feat. If you chose a sorcerer bloodline, they must be from the list of bonus feats for that bloodline. If you chose a domain, you must choose an item creation feat or a metamagic feat. This replaces the channel energy class feature at those levels.
Energy Resistance: At 5th level, 10th and 15th level, choose an energy type (acid, cold, electricity, fire, or sonic). You gain energy resistance 10 to the chosen type. You can't choose the same energy type twice. This replaces the channel energy feature at level 5, 11 and 15.
Wings (Ex): At 17th level, you grow wings and can fly at a speed of 60 feet (good maneuverability). This also grants a +8 racial bonus to Fly checks. The exact appearance of these wings is up to you, but good-aligned favored souls tend to grow feathered wings, evil-aligned favored souls tend to gain bat-like wings, and neutral favored souls tend to get insect-like wings. This replaces channel energy at 17th level.
Master Self: At 20th level, a favored soul becomes the epitome of their patron's will, This functions like the perfect self monk class feature, except that they must choose an alignment that is opposed to them, and gain DR 10/the chosen alignment. For example, a lawful good favored soul could choose chaos or evil, but a chaotic neutral favored soul must choose law. If your alignment changes enough that the alignnment you chose is no longer opposed to your alignment, you must choose one that is. For example if you were Lawful Good and chose evil as your DR, but then became Lawful Neutral, your DR becomes DR 10/chaos. True neutral favored souls gain DR 10 that is overcome only by attacks that do not count as chaotic, evil, good, or lawful. This replaces one of the 9th level spells gained at 20th level.
