From my experience it takes more than just the Dev to get a coin listed and the coin grow.  It's important the community get's behind this project and tweet, comment on FaceBook, vote the coin on exchanges and keep asking on troll boxes when the coin will get listed. Remember Vote! Exchanges take note of tweets. Major exchanges look at innovation.

I have been lucky enough to see different coins grow from the beginning and to see the same community members help these different coins. These members will make themselves known if not already but the way they find new coins is through social media.