A Nehru is indeed elegant and even more so when is it is below knee length. A Vienna cost can be very nice. A good Chinese jacked by the likes of Shanghai Tang is nice. These are all meant to button up all the way. an English blazer looks nicer if it buttons close to natural waist and shows a good amount of shirt.
In my opinion the only redeemable 4 button look is either the Korean boyband look which requires you to be in a Korean boy band to pull off, or a 19 century Sherlock Holmes type look with waistcoat, wing collar, cravat a bowler hat and a pocket watch, with mismatched trousers