As others have mentioned for KotC Paladins currently in Divine Crusader, they'd be going from 7d6 light and 12d6 law to 6d6 light or 6d(variable on enemy alignment).
Furthermore for the investment of a level 28 or 31 destiny feat, as well as taking the exclusive T5 tier in an ED, the proposed changes make Embodiment of Law and DC's T5 (Law of the Divine) only give Armor destruction + Vulnerability (I'm assuming still only on crit, since not explicitly mentioned, but even if on every hit, there's still some issues) when using the imbue. Legendary Dreadnought gets an effect (Terror) similar to armor destruction that stacks on every hit just by being in their mantle (and it stacks with other armor destruction effects), and can get a vulnerability stack on every hit in T4 after they have stacked terror 5 times on an enemy.
The level 28 or 31 destiny feat and T5 selection was already a hefty investment for arguable benefit, but with the changes it doesn't really measure up to other existing options.
I'd propose for Divine Crusader's T5 to be changed to "You apply a stack a stack of Armor destruction and Vulnerability when you critically strike with a favored weapon. If you have the Embodiment of Law feat, [insert bonuses here]" (Keeping the AD and vuln on crit for just taking the ability makes it still a worthwhile take for characters even without Embodiment of Law feat, and making it require a favored weapon makes it be similar in theme to a lot of Divine Crusader's current abilities often wanted use of favored weapons.)
For the insert bonuses I'd suggest one of, or a combination of the following:
- Adding additional imbue die scaling with level and/or epic levels (since before the combination essentially gave +1 die per epic level, maybe make it +1 per every 2 or 3 epic levels)
- Adding additional imbue die scaling with level and/or epic levels (to a lesser degree than above, think +1 die per 3/4 epic levels) and changing the Embodiment of Law's toggle to always be d8/6's regardless of enemy alignment
- Adding vulnerability and armor destruction stacks on hit if the Embodiment of Law imbue is active, and changing the imbue to always d8/6's regardless of enemy alignment
Or something of the sort, additional imbue die scaling with level, more frequent AD+vuln stacks, and/or making the imbue die not variable (similar to inquisitive's Jaded for their imbue) were the components I was playing around with for my suggested change to the combo.
The Divine Crusader T5 + feat combo is essentially 32 EDP investment into Divine Crusader, locks off access to other ED trees T5's, and costs a destiny feat at level 28 and 31 which are competitive slots for plenty of good feats. I suggested the above with that in mind.
For just the Embodiment of Law feat, and not the combo, not sure what I'd suggest for a change if anything. Maybe make getting a new imbue inherently add an extra die for every unique imbue you have access to as just a general system change? Would make Embodiment of Law and some of the other not as great imbue options still be somewhat desired picks, instead of "I already have a great imbue, why pick this up at all".
Edit: Found a bug in the preview when testing. Embodiment of Law + T5 Divine Crusader combo still seems to apply all of it's prior law damage and vuln+armor destruct even without the Embodiment of Law toggle on. The bug still remains even after exchanging the feat away and back and resetting ED tree and grabbing the ability again.