ethereum classic will always remain under the ethereum shadow despite ETC being the original chain and ETH being the forked coin. so its long term potential is always going to be limited and also all the bugs in ethereum platform is more visible on ETC since it is the smaller  coin and that prevents it from real growth. not to mention that the ethereum foundation doesn't allow its price to rise, they will dump it down because they don't want a competition and they have the 70+ million premiened coins to dump for free!