Add more lures. Not enough lures to choose from. With the real fishing world updating every year their should be more common lures for catching bass and more designs and colors.
They are going to add some more equipment in the next update don't know if this will include lures and bait though, have you purchased the trophy hunter equipment pack more lures and equipment in that. They are also only allowed to add in stuff they agreed a licensing deal with the manufacturer into the game hence why only a few manufacturers are in the game.