I don't know why you are still stick with HEAT, no large exchange lists it, at least you need bittrex, OK? They raised more than 1000 btc but lol.
no risk, no fun. you have to feel comfortable with your investment, some people need a coin which has a marketing machinery running in the background. this project is focusing on microtransactions for blockchains, because thats a real world use case and its also marketing its development. it make sense.
for a listing on bittrex you need market makers trading your coin, this project is focusing on its own exchange. PoS coins dont work very well on exchanges, because you cant mine/mint/forge it. so if you are small, you have to go your own way, like heat do. I am sure once heat is more mature, it will be traded on big exchanges too. It will be listed on bittrex and other exchanges. Now we wait for wallet integration on alcurex, very nice exchange with coins tradeable from poloniex and bittrex.
there are still some things to do like PoP reward, 1000tps, so there is potential, thats why people buying in.