Adrian Dvir in his book "X3, healing, entities and aliens" describes alien clinics which treat earth humans and are located in another dimension. As human-alien relationships develop, it will be great to establish alien clinics on Earth, in our dimension. The best locations for these would be in alien bases located on University Campuses. This way human and alien scientists and doctors can work together. Since many aliens have trouble existing in our dimension for prolonged time, much communication can be done remotely.
Creation of alien clinics will demonstrate to humanity that aliens can do good and will expose aliens and humans to each other in a very positive way.
As humans become accustomed to aliens, some cities may invite human-looking hybrids to live openly there. There still would be needed some protection but this can be achieved with combined human and alien police. The main concern would be as always terrorism.
As humans and aliens continue interactions, humans would become friends and mates with aliens. Currently we observe a very unique, very new phenomenon of free mating between individual of different races in civilized countries. Until about the 1960s this was extremely rare. Conscious effort of equating the rights of all races, joined work and joined education allow for almost unrestricted mating between the races. This is still far from happening in less civilized countries.
Common work and education between humans, hybrids and aliens would promote mating. Human laws on equality of races have to be extended to alien races as well.
One of the incentives for humans to mate with aliens is that the children would become more talented in thinking, telempathy and psychic abilities than humans. Also these hybrids will be more compatible with the earth environment. This is a likely and possible way for genetic improvement of humans.