Re: Which character has changed the least in the new universe?
Just like "Sparks" would be an electrician or electrical engineering.
"Sparks" would usually have been a nickname for a radioman or wireless operator. (The "Sparky" always getting rung up by Radar in the MASH
TV series would have come by his handle the same way.)
In the old days, before she'd acquired a given name, we might have had "Sparks" Uhura.
As for literary criticism in general: I have long felt that any reviewer who expresses rage and loathing for a novel or a play or a poem is preposterous. He or she is like a person who has put on full armor and attacked a hot fudge sundae or a banana split. ~ Kurt Vonnegut, Jr.