1) Horn is weak for highways, on a slightly windy day bigger vehicles don’t get a clue that something is coming from behind
2) On a windy day because of the miniscule fly screen one encounters wind resistance which affects the top speed
3) Tyres are decent but not great. Better tyres will enhance the potential of NS even further. Pirelli MT75 for front & Sport Demon for rear available at similar spec in the market will be good replacement for the stock
4) Saddle height which everyone has already noticed can be problem for some specially the medium built guys who are of height 5’5” and less
5) The straight-line stability of P220 at speeds above 120 is better than NS. Sometimes weight helps
6) The vehicle is all about acceleration and how quickly you reach at that speed. If one is expecting that it will beat P220 hands down in top end then it will not happen it will fare almost equal although it will reach there much quicker than P220