The overall american legal system in terms of its complete collection of laws are shit, and I wouldnt recommend it for the dutch. However the constitution itself, hell yea, that would be an improvement for the dutch IMO.
The lack of freedom of speech in the netherlands, the fact that calling a police officer an insulting name can get you arrested and you have no legal defense, is a serious violation of human rights IMO.
That said, overall the dutch system isnt too bad, while I have aspects of it I object to overall living in the netherlands has treated me fairly and the police dont seem abusive. So it works at least.