What has to be addressed urgently, is what gave Poser its name: POSING. You can create a beautyful character from allmost every figure with the head room and/or the great morph brush. You can load a huge scene into your viewport and even add an athmosphere into it. We now have a renderer with a shader system, that give OMG- great pictures now. You could even pretend to some non.experts they'd be Maya ore 3dsmax renders. But as soon you pose or animate your character, it will look like crap.

Joint bendings are the key issue. As long as you have those bended limbs, that intersects themselfes, deform like straws, unnaturly stretch verticies and polygons or bulges like baloons, Poser won't satisfy your needs and will cause frustrations. Allmost every good Poser picture is postworked because of the joint bending issue. Either done in photoshop. or corrected before rendering with the morph brush or externel in zBrush.

So fix joint bending system, nothing else matters.