I like the intention of spicing things up, but I think the suggestion just fails at the fact that the game is almost unplayable in 1st person mode.
You don't have a feeling for your weapon reach, nor can you see if your sideswing will wound a teammate. Compared to 3rd person 1st person feel like tunnel vision, you field of view is mssively reduced and thus you are less aware of your surroundings. The last point is not that bad in itself, but after being used to play in 3rd person for years it just feels like "crippling" the game for no real reason. Sure, it's some kind of "lol"-thing, like
those flying carpets and magic wands, but it's only suitable for certain occasions, where everyone expects it.
But on a public server where 80-90% of all people connect in expectation of a serious game, the "lol half of our losses were inflicted by teammates"-thing won't be taken as fun by most users.
That's why your suggestion is declined.