I agree that much of what comes out of a slow cooker can be a bit on the boring side. Boring meaning kind of one dimensional in terms of texture and taste. I have never (and I apologize to all my Irish ancestors) like boiled dinner for the same reason. I'm just not a fan of throwing a bunch of stuff in, cooking it until it's soft, and eating it as a unified meal. But there are some good uses for a slow cooker.
As mentioned, Chili comes out nice. I like making a spicy kind of home made sloppy joe. A lot of soups (I like crockpot Tortilla soup) come out very tasty. You can make a big batch of kale in a slow cooker that's pretty nice. Certain chowders, cobblers, bread pudding, and cocktail-foods as well.
Is this your homework, Larry?