"Fishing is too much OP". Make some good kind of datapack man like a tech datapack involving raycasting, custom dimension, custom items, custom blocks; custom mobs, custom armor, etc. And make a unique idea, these types of datapacks are not unique, they are just everywhere without any need, they dont make game fun they just ruin it. Try to make some unique ideas and implement them.(also this is super easy, I can make this datapack in 10 min., If you check my channel, you can see what took me 3 hours)

This has been done so many times before. It isn't a new concept in the slightest.