Will you arrange trading competitions, like Binance and Kucoin? They would surely rise the price of the TRN token. Not sure if that's ethical or even legal to manipulate trading volume, but since everybody is doing it... (well bittrex is not)
Seems like this is the way to increase exchange popularity nowadays but you need to have a huge budget to start this campaigns so early like those two exchanges did. They will certainly need to do something about involvement of their customers in their exchange.
I think the reward can be the project's coin , and you can use some of the listing fees for that events. I think there is no risk to do that.