softbodies is not made for that, and collision detection will always be too slow
armature alone is not enough
what could be added to blender to make clothing easier and better quality?
I have though of 2 things:
vertex to vertex parenting (to use with softbody without collision)
bound vertex to a mesh surface (that should be easier to calculate than collision)
I tried making clothes after playing round with the cloth modifier and I couldn’t get it to work. I think you can only have Planes for cloth but I’m not sure,
Each vertex has gravitational force applied to it, collision and damping=air resistance. Modifier to optimize how many of the verts are used in simulation, so that previews could be made quickly, hmm but the verts not in simulation would have to average the postion of the vertexes which included in simulation. That is what i think.