Chess according to Zillions: Q=7.6 R=4.6 B=3.2 N=2.7 P=1
Shako according to Zillions: Q=8.9 R=5.6 B=3.6 N=3.0 P=1 C=5.5 E=2.9
Xiang Qi according to Zillions: R=5.4 C=5.35
Chess : Q=9 R=5 B=3.3 N=3 P=1
XiangQi : R=12 C=6 H=5 E=3 F=2 P= 1 or 2 (before or after crossing the
River) -- so Zillions is very wrong about R=C.
Cylindrical Chess: R=B (two eight-square files) -- colourboundness
doesn't matter. Zillions should be right about N=E (eight squares) for
Shako.
I would add something for the Cannon and substract something for the Queen
because a Cannon is as dangerous as a Knight to a Queen (and an Elephant
isn't, by the way). So,
Q=10 R=5.5 C=4 B=4 N=3 E=2.8 P=1 in the opening.
Q=10 R=6 B=4 C=3 N=3 E=2.8 P=1 in the midgame.
Q=10 R=6.5 B=4 N=2.5 E=2.5 C=2 P=1 in the endgame (if the Pawn isn't
particularly strong, of course).