This hour long video is really worth a watch, It really shows you a lot about what's going on currently in the quest for obtaining a way to regenerate instead of scar. Which is a lot.
One thing that is said by the way, is that animals in general scar less than people which reminded me of the scarless results in the mouse using the hydrogel.
Another thing is that it is estimated that it will take at least another 40+ years before people can regenerate completely. That is, if it is possible in the first place.