OK, so I got a little impatient... tell me what you think. My intent is to create a mechanic where the BoED VoP can be modeled, and still have room for variation and adaptability to enable the Vow to be something that most any Class or Alignment can take advantage of.
Instead of Chakras, I chose to use the term "Meridian" as it is (arguably) a bit more setting-agnostic but holds the same meaning. I also dipped a bit into Incarnum, and came back out with 10 Meridians, more or less coinciding with Body Slots. Each Meridian has an equivalent Magic Item slot, as well as a more-or-less descriptive Foci Affinity, and a linked attribute. Further, each meridian has a baseline effect that occurs as Meridian are opened.
At First level, a VoP character opens one Meridian, at second level, they can chose a single Foci. At Third level, and every Odd-numbered level after that, they open an additional Meridian. Each odd-numbered level, they get a new Foci.
Foci are akin to "items" that are attached to a Meridian. They (normally) have no outward manifestation, but provide extra "stuff" for the Vow-taker. My design intent here is that each Foci will have a favored Meridian, and attaching it to its favored meridian would add an additional advantage, or perhaps attaching it to a non-favored Meridian might inhibit it in some way. Conceivably, a meridian might have significantly different effects depending on which Meridian it is attached to. A meridian with no attached foci provide only their base effect, and no Meridian can have more than one Foci (though that would be a good Feat)
Finally, Meridians have a potency, defined as a "Tier." When the first Meridian is opened, it is a T1. When the second Meridian is opened, and every second one past that, all meridians increase by 1 Tier. As a character walks the path toward enlightenent, their Meridians burn more brightly.
The effect of this will become more clear if you read on...
[I'm not certain how to do Charts in this board, so lets try this...]
Meridian......Slot........Foci Affinity ...................................... Attribute .................Effect
Crown ...........Head ....non-visual perception, mental Stats......Int..............+1 Enhancement Bonus, +1 per tier past 1
Feet ...............Feet .....Movement, Mobility, Stability...............Speed..........+5' Enhancement on base speed, +5' per T, up to double
Hands...........Hands.....Attack Rolls, Skill Proficiency ..............Dex.............+1 Enhancement Bonus, +1 per tier past 1
Arms .......... Bracers ...Defenses (durability)............................Str..............+1 Enhancement Bonus, +1 per tier past 1
Brow..............Eyes.......Vision, Awareness ...............................Wis.............+1 Enhancement Bonus, +1 per tier past 1
Shoulders.... Mantle ... Defenses (avoidance), Movement.........Saves..........+1 Resistance Bonus, +1 per tier past 1
Throat..........Amulet....Communications, persuasion...............Cha............+1 Enhancement Bonus, +1 per tier past 1
Waist............Belts........Physical Stats, survivability..................Con............+1 Enhancement Bonus, +1 per tier past 1
Soul..............robe........Energy resistances (incl +-).................SR...............SR = Character Level +T, min 10th level
Heart............Vest.........Immunities, bodily integrity................DR...............DR that scales with level, min 10th level
So those are the Meridians. The first design hurdle I have hit here is that at 20th level, as written, a VoP character will have +6 enhancement bonus on ALL their stats, which strikes me as really bad. Taking a page from the BoED again, I think I want to have each of the Meridians that rovide an Enhancement bonus to be considered T-1 for every one of them past the first. That way, the first one you open will end up providing the highest bonus in the long run. I'm not sure how to best schematize that, however.
Next are Foci.
Foci are divided into three categories, Mind, Body, and Soul. (I'm thinking that if I use Soul here, using it also as a Meridian name is a doubly-poor idea, so again, these are working names right now). Within those categories there should be foci for Offense, Defense, and Utility. Once a Foci is chosen and attached to a Meridian, it should be very hard to "move" it.. though I do not think impossible. A long and expensive ritual, perhaps, or even just a "retraining" option on Leveling up?
I went through the BoED and stripped out all the things it provided the VoP besides what I have above, and looked at them as Foci. As mentioned, my goal is to be able to mimic the VoP from BoED. To that end, I have the following Foci:
1: Mind
a: Offensive
b: Defensive: Mind Shielding
c: Utility: True Seeing
2: Body
a: Offensive: Enhancement bonuses to attacks
b: Defensive: AC bonuses, Endure Elements
c: Utility: Sustenance, Regeneration
3: Soul
a: Offensive
b: Defensive: Deflection to AC, Energy Resistance
c: Utility: Freedom of Movement
That could more or less recreate the BoED VoP. If the Foci are written so that they have sliding values as the PC increases in Tier, and\or added advantages for attaching a Foci to a specific Meridian, you can do things like:
- The Exalted bonus to AC is 3 + Tier. If attached to the Arm meridian, it also provides Natural armor bonus of +1/2 T
- if Sustenance is attached to the Waist Meridian, it becomes Greater Sustenance 2 Tiers later.
- Mind Shielding, if attached to the Crown or Shoulders Foci, provides Mind Blank (eventually)
One of the advantages I see with using Foci and Meridians as a two-tiered schema is not just for its adaptability to suit a wide range of character types, but also to enable a DM to tailor its power level to suit the prevalence of magic in their game. The BoED version of the VoP also provides a raft of Exalted feats that I haven't addressed here, because I don't think that they are really needed besides mentioning in the Vow itself that you get a bonus Exalted feat every other level past the level when the PC took the Vow. I also think that those feats should be expanded from just "exalted" to also include Oracle blessings (where thematically appropriate), possibly feats related to the character's faith (Be they Cleric\Oracle Divine feats, Wildshape\Druid Feats, conceivably even the new Bloodline arcana, if it was appropriate to the concept), or even replace them with a Domain.
Foci and the VoP can clearly provide characters with a huge advantage in terms of having "equipment" that can't be removed, sundered, or run out of charges and ammo, so it is a REALLY good idea, I think to have a mechanic by which they can be lost, perhaps not physically, but a Code of Conduct restriction, or even making them vulnerable to Spellblights or perhaps Meridians "clogging" due to Ability Damage or Drain, effecting the appropriate attribute-linked meridian, and any foci attached to it.