I Mean some do a fine work in here others just make static work , If I get a Prop I expect some features For example I get a DM's Product they look great , but also is related with allot of work if you whant to have the parts to be movable as they are static. so to do so you go to the material room and ripp appart the whole thing save each material as idividual Prop then you reassemble the whole thing make a figure out of it or a new prop Parts can be moved the static is changed to a Functional Prop for animations.

It is a great Emprovement for the Originall figure. but as most in here say you Buy a figure and any changes cant be redestributed even if it is just an addon to improve the thing you actually bought it has to remain the same as it was sold. But if you take a V4 and make a WM out of it you may do so and redestribute the Improvement 

can you Please tell me where is the difference between the two acts of Modification.