FC would give the same effect without the current penalty, Rending with the penalty would still give a chance for Black Templars under this vow to be a bit more deadly (if slower).
Uphold The Honor Of the Emperor: Feel No Pain with no cover saves allowed, immune to Pinning.
Given the new FNP rules this functions as a pseudo cover save that can be canceled by Instant Death shots.
Abhor The Witch, Destroy The Witch: Opponent must have a psyker in their list. After all pregame shenanigans (Infiltrate/Scouting/etc.), just before the first player's actual first player turn, the Black Templars player may take a free movement phase (or limited to 6” or d6”) towards the nearest enemy unit. +1 to Deny The Witch Rolls (assumes that all Black Templars will have the Adamantium Will special rule for 5+ DTW rolls already, making them 4+).
Accept Any Challenge, No Matter The Odds: Three choices: restored Preferred Enemy in Assaults, give Counterattack to match with the Rage rule, or give Hatred in Assault. Of course, must charge if it is possible.
The second option is to go ahead and complete the transition to full Blood Claw rules. As long as we get shafted by one, might as well get both of them.
Note: given that this duplicates the Chaplains' Litanies of Hate, either they again become less useful or change the effect to Crusader instead (roll 2d6 & take highest for running and +D3 to Sweeping Advance rolls).
Abhor the Witch: Same as current, no psykers except Grey Knights.
No Pity! No Remorse! No Fear!: Same as current, Fearless in Assault.
Righteous Zeal: The most controversial. I'd change it as follows:
- Morale Check for any casualty (or “removed from play”), triggers on a failed Morale Check.
- Must move d6” towards nearest visible enemy unit (not optional, every model must move forwards). Walkers, unless immobile (Stun does not prevent this move), check after taking any glancing or penetrating hit unless destroyed.
- If this movement takes any models into B2B contact with an enemy unit, the unit is considered to have charged into Close Combat in the next (opponent's) Assault phase.