i agree with Jimmy,
unless these cells under take extra safety tests such as a drop test or puncture test, which i don't believe they do? though i do think they need to police the hard case lipo rule but there should definitely be more cells on the lists.
what makes a mockery of it all is when you get 2 cells both same make both same model only difference being the C rating or mAh but ones on the list and the other isn't
As for motors at least in 1/10 off road class anyways, everyone uses different timed motors so why police it? if one guy can use a 3.5t and another a 13.5t in the same race and both are legal does it really make a difference if its a list or not?
i see motors as quite simple they spin and the car goes forward, the cleaver part is the ESC.
(side note tip for people on budget i think the Speed passion sportsman is on the list probably the cheapest on there about £30 it spins.)
rant over