Ah okay, in that case I agree! You could do a lot of cool things with a custom trident enchantment. First thing that comes to mind for me is an enchant that makes it bounce from mob to mob, "Daisychain" or something. If anyone else has ideas I'd love to see 'em!
An ender pearl/ slime shot like enchant would be awesome instead of your trident coming back to you, you go to it lol. not at all like riptide, you're launched farther and can do it on land.