I will give a look at Parachute Pool. I've also made a little try to mine with my very limited resources since indeed the wallet seems very friendly for doing that, but the wallet didn't detect in my system any GPU card it could mine with, and I have a 1060 nvidia card. Which could be the reason for that?
It's usually because you don't have have the latest CUDA installed. Once that is updated, lightwallet should be able to detect your GPU. Also make sure that your GPU has at least 2 GB free so that it can participate in mining.
Do you have plans to be listed on any stock exchange ?
It's currently traded on an internal exchange (market.merit.me). And yes, there are plans for other exchanges. As per the last AMA, timeline for new exchange is Q4 of this year. But no updated news on that yet.