Trident buff

I dont want it to necesarily getting just more damage or anything however

Upgrade trident
similarly as you can upgrade diamond items by netherite, same for tridents, either to it be netherite too or some other item, maybe heart of sea, but it is too easy to get (in singleplayer) but template could be that one meaningful barrier for it, it can be palced anywhere, maybe archeology could reveal rare template or even material used to upgrade it
simialrly as netherite tools, upgraded trident would gain damage and durability, and maybe move faster when tossed and returning by loyality, propulsion of it with coresponding enchant could also be higher

Impaling enchant
making it affect more mobs, maybe work on all mobs during rain or when mobs are in water

Additional enchantments
piercing, could make trident go trough mobs before returning/sticking to ground
multishot (not think this would ever get trough but still), making it toss multiple copies of trident, excesive tridents disappear to not make tridents reproducing or something
punch, adding more knockback when trident is thrown
quick charge, to make "preparation" for tossing it faster
looting, to make it having looting effect
enchantments would obviously respect mutual exclusivity

I believe these would make trident more competetive among other weapons and more fun to use (especially since getting it is so much harder than any other weapon, it would be nice to it be truly rewarding, I love trident but it cant compete well with other options)