The auto-thesaurus would make your prose worse a lot of the time, because often you want to hold the word choice constant to make other choices salient ("We sha

The auto-thesaurus would make your prose worse a lot of the time, because often you want to hold the word choice constant to make other choices salient ("We shall fight on the beaches, we shall fight on the landing grounds, we shall fight in the fields and in the streets, we shall fight in the hills; we shall never surrender", but the principle extends to less obtrusive cases). Maybe if you make it really easy to reroll the dice and get another rewording, or go back to the original? That could be interesting then.