Why does Summoner's Rift's shopkeepers not speak or don't have names?

In the Howling Abyss there is Gregor in the blue base and Lyte in the purple base.

In the Butcher Bridge there's Bubbs in the blue base and Finn in the red base.

They all speak and have different personalities.

In the Summoner Rift, the most iconic and important map of the game, they don't speak, they don't have apparent personalities and (as far as I know) they don't even have names.

It would be nice to at least be able to refer them as something else than "Blue/Red shopkeeper" or "Yordle Granny"/"Otter Vastayan Guy".

(This applies to the Twisted Treeline's shopkeeper/"Pumpkin Ghost" aswell.)