No need for more regulations on cryptocurrency because there are some countries that relatively would not appreciate cryptocurrency to be applied in their country for some reasons on security. However, a certain country could make their own regulations and this may apply only into that country and not as unified regulations for cryptocurrency. Better be this way in creating more regulations for cryptocurrency.
See more regulations not always mean a bad thing for the crypto. It may be good if the government of your nation has accepted the bitcoin and their rules and regulations are also allowing the market to work in an efficient manner, thus leading to better market conditions. Not all the countries work this way, in fact!! There are many countries that make it difficult for the crypto currency market to function in those countries and have led many problems for the people.
PS: Regulations in many countries have led to reduced scams and also lesser darkuse of the crypto coins!