I've read through both of these scripts, and I've got to say that these are 
not exactly kid-friendly. This is some really dark, violent stuff, and some of the lines I just could not imagine coming out of some of the characters' mouths (not in their finalized forms, anyway):
SIMBA (to Scar): I think you're fat. And useless. And deserve to die.
But my gosh, the image of those two spinster ratels (honey badgers) nursing Zazu back to health is 
so adorable...I may have to draw fan art of that someday.
By the way, anyone remember a lioness named Naanda that was mentioned in the TLK Blu-Ray's special features and said to be Sarabi's sister?
Well, according to one of these scripts, not 
only is she Sarabi's sister...
...but also 
NALA'S MOTHER.(The 5-23-90 script merely calls Naanda Nala's mother while 1-19-90 script says she is both Nala's mother 
and Sarabi's sister. The 1-19-90 script constantly calls Simba and Nala cousins and never outright mentions them becoming mates.)