Also, the new figures have modern articulation - so shoulders (that move in more than just one axis), elbows, wrists, hips (that move more than originally), knees, ankles, and necks.

There are plenty of toys of characters that were never made in the 80s, but if you actually want them they'll be very, very expensive at this point (MOTU Origins has horrible distribution at the best of times, plus there's the regular Australia tax, plus everyone wants to be a scalper these days). I can post a list if you like.