Oooh, I was just thinking of posting a script request like this! I'm surprised someone else thought of it too! It sounds like a very difficult thing to implement, especially if it's your game and you want to decide what words to use.
Is it okay if I bump this? I think it would be a neat idea, and certainly a challenge. I'm not sure how a system like the Treasures of the Rudras' Mantras system would be implemented.
I think it would be interesting, and it's a great system to allow the player to have a greater input on the game from their perspective, which I think is an important aspect of video gaming.