For the record I really hate the term "immersion" in discussions about games.
If your argument to a game feature is exclusively and only "it adds immersion" then very likely its an element that will not add anything to the game itself at all, will annoy most players because its wasting their time, and is just a bad idea overall.
A game is a game is a game. Game elements have to combine to a good experience overall. Anything that merely clogs the experience has to be optimized away.
For example nobody would like the game of chess more if you animated the pieces. There are chess programs that did that. Nobody uses them.
