It's definitely good to have more options for baits. Although corn is very easy to obtain (much easier than earthworms or guts), so probably it would be better to have a recipe which requires more ingredients to craft a corn-based bait
I will think about that...
Or another option (especially once food spoilage comes into play) could be stale bread for freshwater fishing. That would require a lot more steps and give a reason to use stale bread.