I know fishing is a ways away but I think there should be something like ToonTowns Fish bingo sometimes and maybe if you catch a (new item) treasure chest you can either a. Display it in your condo or b. Open it and get a random fishing drop that isnt fish but just a thought
Yeah I think being able to fish up decorations and the like would be a great idea.
I think earning units from selling fish could be a good idea.