Just played Break The Line with Reva, lost 3 v 4 against Asami - @Insomniakwulfcame in at the end with some interesting feedback. Although Reva hit like a train and did some work, I kept her too far back. If you get her sat on the centre line, she can threatened 2/3 Strat markers.
I tend to take quite an elite list with Reva, and didn't have the models to where is felt okay to spend their turns moving the Pyre markers. Since Asami shut down my Grave Golem (Jorogumo with their heal-deny and positive dmg flips), I wish I'd taken either Lampad or Dead rider for the Interact, free move, interact combo.
Bone pile did absolutely work tho. Against a non corpse marker denial crew (shakes fist at Oni), they would be amazing. Maybe take two, then ealking/chucking corpse candles or zombies where you need them, then popping out Bone Piles to move a marker.