Sorry to say but you will not get a "bigger" exchange without raising the nethash. You will not raise the nethash without more exposure, everyone I`m telling about leprocoin, just sees the name and passes, it is funny, I know, but in this cryptoworld when all kind of animal coins appear, Leprocoin doesn`t seem too cute:))One of my hopes is that comkort.com will get more exposure to leprocoin via indirect trading (people see LPC can be traded there, wonder what it is, start searching and end up mining because of low diff) The problem is not to raise the diff, the problem is maintaining that diff for a longer period than 2-3 days. A lot of people mine 3 days, have a good stash, jump to another coin and keep the stash until the price is right, then dump, this is the sad truth. You cannot promote the coin via the name because it is not "cute", you cannot promote the coin because of the story behind it,because it was intended for a closed community at the beginning,for anybody outside that community this coin doesn`t mean anything.What I can see is promote it because it is rare, it had low diff, it has KGW and with the raw agressive power of Jason:)) It`s main purpose of serving that closed community is not here anymore, so give it another purpose based on the coin`s name and theme (Which is hard, trust me, the only other way we could think about was "Leprechauns", the lucky rainbow dwarf:)), because Lepro-Lepre but that is totally different with the main theme of the coin) Another idea to make the coin "usable" in real life, is to intend it solely for horror/thriller movies, or any kind of movies. For example you can have something like Netflix , online movie store from were you can rent movies to watch or watch online and pay with Leprocoins. This website can be a global, legitimate business. Put lower rates than the major competition, legitimate registered business that pays tax and author rights + A legitimate exchange that you can exchange Fiat with Lepro and maybe you can create something.
If somebody will steal my idea, and make a "moviecoin", or do this without my participation at the project... I will send Jason for you in  your sleep!:))