Adding stretching and pressure conservation on cloth and soft body when under compression or stretching

It would nice to add stretching and pressure conservation on cloth and soft body when under compression or stretching in blender 2.82.for example right now the cloth modifier is supporting pressure but collide it with multiple collision objects there is no pressure conservation or stretching like a regular baloon would do, even after adding pin vertex groups there is no more collisions happening. Great if this addition show up blender 2.82

agape simon Well thanks.