I feel that the rakshasa perhaps wouldn't be as iconic of a monster now if not for the quality of this piece. It really conveys "scheming yet sophisticated man-eating monster" well.
I'm of two minds in regards to neutral being the new "any alignment". It's a throwback, but I can see it being confusing.
Also, I'm glad there's Variants of the merfolk and azers!
This plant monster might be the same as the one depicted on pg. 35 of the new DMG! I wonder what the light beams coming from the eye flowers are. Beholder related, perhaps?