You need to also add many different crypto currency not only the popular of them .
The community of that currency can also help your exchange to make some volume having this may be a good idea .
If you will add many different coins will you also have a free listings? Like mercatox or other exchnage that have it.
Currently we consider two strategies for Orion exchange development. The first one is to add many coins and to attract many users. Another way is to move gradually and to choose only the most popular coins. What way is the most effective on your opinion?
Add many coins as long as you will ask for listing fee, you will be benifited with thier community to use your exchange and its favor to you since there are many people will registered and use your exchange to trade that coins.
If you will only list popular coin you will have many popular exchange opponents.