Weight mapping, YES.
Add bulge mapping if you need it.

Magnets : personally, I hate them in figures. Magnets belong in a hardware store.

Displacement maps have no polygons, they have pixels.

Poser supports : For each material zone and For all textures :
(Diffuse, bump, specular, normal or Displacement maps)
512x512
1024x1024
2048x2046
4096x4096 
8192x8192
size maps (just to stay in the power of 2)

Poser 1, 2, 3, 4, 5, 7, P8 and PPro2010, P9 and PP2012, P10 and PP2014 Game Dev
"Do not drive faster then your angel can fly"!