Basically whole body regeneration is definitely possible we just need to right genetic code to push the regeneration button in the human body much like how these mice had their digits regenerated so too we can regenerate just like Deadpool or even the axolotl.

Wound fibrosis after amputation in mammals is replaced with regeneration of amputated structural elements by sequential FGF2/BMP2 treatment. Regenerated tissues include phalangeal/sesamoid bones, tendon/ligament, synovial joint, articular cartilage.