Lusternia seems to be the only IRE game without a fishing system. I think if one were implemented, it would be both good for roleplay and good for people who don't buy credits to make a bit of money doing something other than bashing or influencing (really the only two options for making money if you don't buy credits) since both options get majorly boring. Implement a ranking system and achievements based on the weights of fish caught, maybe make it a bit dangerous by giving a small chance of being pulled in by a shark, whatever, but fishing needs to come to lusty. We have a bunch of water areas and really, who wants to CAST BLAST FISH or SWING FISH to catch them? Dunno about you, but swinging a sword at a fish seems a bit like overkill. Give me a fishing pole and some bait and I'll sit around and fish and not be bored. Also give fishing it's own skill rank that you advance in the more fish you catch, and the more skilled you get makes the chance of catching bigger(and thus more profitable) fish increase. Make it a bit like ratting, with certain NPCs scattered about that will buy your fish at a certain amount of gold per pound.
Questions? comments? Feedback? I don't know about you, but I love the thought of sitting on a riverbank and fishing the day away, having a picnic at the same time.