From one of the videos Paley made about a year ago he talked about them focusing a lot on creating smarter and smaller lengthening mechanisms.

It will be interesting to see if they are able to create devices that lengthen at smarter rates whether it will give better results on nerve and muscle tissue in LL.

Like right now when you lengthen, it is in instant steps of ~0.3 mm in one second. Three times a day to achieve ~1 mm per day. This causes an instant large spike of pressure on the muscles / nerves. If we can keep this pressure lower, by lengthening slower but constantly, maybe during sleeping or something similar, it might minimize long term damage to soft tissue.