
Originally Posted by
Enferno
...someone wrote about heroic past lives (Paladin x3 + Sacred Fist x3), does this mean you pick one or the other or does it mean you do each one Paladin 3x and Sacred Fist 3x? Same with the new cleric and bard, I'd assume.
As Caarb said, for Completionist, you can pick one or the other - both count as a "Paladin" (or Bard or Cleric) for Completionist.
For Past Life bonuses, they're each distinct, and you can (if you want) chase as many as 3 of each, as up to 3 PL class bonuses will stack.
Example: A Paladin PL will give you +10 Healing Amplification, while a Sacred Fist PL will give you +5 HAmp and +5 Positive (healing) Spellpower. 3 (or more*) Paladin PL's will give you +30 HAMP, while 3 (or more*) SF PL's will give you +15 HAmp and +15 Positive SP. 3(+) Pali and 3(+) SF PL's will give you... +45 HAmp and +15 Positive SP.
(* Note that there is no reason to intentionally get more than 3 class PL's, but it sometimes happens if you end up chasing an Iconic PL and you've already covered the class you use.)

Originally Posted by
Enferno
...I just went ahead and used a +1 Lesser heart of wood and went full warlock. It's a MASSIVE difference...
Well, cool! Might be a cutpoint - Warlock gets more Pact and Blast damage at different levels.
But even if it's a placebo effect, if it works, it works! And it's great you solved it, because...
...Now, there's a new, important topic that we (as a forum!) have to solve, and the clock is ticking, which brought me back here... Epic feats. 
That build has no blueprint for what Feats to take from 20-30!
I took a stab at them - but I am really not the person who knows these best! And, as a melee/caster mix, it's not something most other builds lend themselves to. So, hopefully, one or more of the Epic gurus will weigh in!
I'm ~fairly~ confident in about half of them - but the other half are all vying with the others with this mixed-DPS build. A lot depends whether the majority of your DPS is coming from your Aura/Bursts & Spells or your SWF... 
(Even these are not locked in stone, not the choices, not the order...)
Epic Feats (Errors)
...
21 Epic . : Overwhelming Critical
19 or 20 on an attack, your critical damage multiplier is increased by +1.
24 Epic . : Wellspring of Power
Boost: Activate to gain +150 Universal Spell Power & +20% Spell Critical Damage for 30 seconds. +110 Maximum Spell Points.
26 Destiny: Perfect Single Weapon Fighting
Vorpal threat range is 19-20; Ability score modifier to damage increases by 25%; +10 Combat Style bonus to Melee Power.
27 Epic . : Epic Eldritch Blast
+2d6 Eldritch Blast Dice, +1 per 2 Epic levels, max +7d6 dice
28 Destiny:
29 Destiny:
30 Epic :
30 Legend : Scion of: Celestia
(just "yes" https://ddowiki.com/page/Scion_of_Celestia)
Here are some of the "Alternate" Feats - all have their attractions. Note that some are gated by level (many Lvl 28+), or are Destiny/Epic slot only (or have other pre-reqs), so don't think you can just plug your favorites in anywhere; some will be ruled out by choosing others:
- 28 Arcane Warrior +2 Spellpower per melee strike, stacks max 20x (= +40!?)
- 22 Epic Spell Power: Light +20 Spell Power of the selected type; +15% spell critical damage with the selected type; +5% all other types of spell critical damage.
- 22 Epic Spell Power: Electric as above; the +spell crit %'s stack!
- 21/24/27 Epic Eldritch Blast +2d6 Eldritch Blast Dice, +1 per 2 Epic levels
- 22 Epic Pact Dice +1d4 Pact dice, +1d4 per 2 epic levels (definitely the previous one over this one - but possibly both?
) - Mental Toughness +1% spell crit; +110-155 Spell Points (note- all "blasts/bursts" are "spells")
- Imp. Mental Toughness (sim)
- Epic Mental Toughness (sim)
Spells:- 25 Hellball massive fire+electric+acid+sonic+cold spell, favorite of casters
- Ruin single-target spell for 500 untyped damage (& is a requisite for...)
- Greater Ruin single-target spell for 1,000 untyped damage
Defense:
- 27 Epic Damage Reduction 10 PRR, if you're getting beat up too much, tyvm
- 28 Deific Warding +10 PRR & MRR, w/ additional +2 buff effect on hit
One of each, please!... but there's not room for more than a few. So, it's a start, and a place to start a new discussion...