Re-rolling morale is pretty unimpressive as a trait, even compared to below average traits like Black Legion +1 Ld with bolters/plasmaguns firing one shot at -1 to hit after advance.
I propose changing it to:
* all Word Bearers INFANTRY, BIKE and HELBRUTE units roll twice picking lowest die for Morale tests
* and their attacks and shots re-roll 1's to wound against enemy units within 8" of a friendly DAEMON unit.
So, when I have a unit of possessed or flesh hounds in combat with a bunch of conscripts, and there is a Leman Russ right next to them, my havocs get the re-rolls when firing at it.
Would that be fair?
Obliterators would not get the re-rolls by themselves right after deep striking, but possessed would always have the re-rolls.
I chose to wound re-rolls, because to hit re-rolls would not stack with Dark Apostles, which are kind of the Word Bearers thing.
This trait puts some emphasis on Word Bearers working together with Daemons, and there is some competitive edge taking this trait on something else besides characters just to use the summoning stratagem.