You can reach out to Marvel Customer Support at help.marvel.com and specify which titles you would like to see added to the collection. Please note that we cannot guarantee when or if any request will be granted. However, we are constantly updating the site and there will be a variety of classic and new titles added every week. To see upcoming releases into Marvel Unlimited, check out the release calendar located in the Comics section of the Marvel website here.
Rest assured that we are working hard to fill any gaps in our digital comic series.