"I still wonder why we can omit commas on import/var/const blocks and just can’t on lists and maps. Anyway, Rob Pike knows better than me! Viva la Readability!"
import/var/const blocks rely on semicolon insertion rules, list and map literals have a list of Elements separated by ',' [0]. I guess on the surface level I see how this is sort of inconsistent. It would be interesting to think about applying semicolon insertion to comma insertion.