What is your suggestion?: In Alora currently if you try to teleblock or barrage while wielding a trident of the swamp or a trident of the seas, you will be prevented from casting your spell. I assume the game thinks you're trying to use the built in spell in PVP, which is disabled as it should be like in 07. However the trident is still a useful item for pking in 07 due to it's high magic bonus, having just 3 less magic accuracy than the kodai wand, making it a useful item for TB accounts. The built in spell in the trident should still not be usable in PvP combat, but should be able to be wielded while casting other spells in order to take advantage of it's high magic bonus.
Is this in OSRS?: Yes. Here's a video from 07 of it being used with barrage.
Has this suggestion been accepted already?: No.
How would this benefit Alora?: It would be a useful item for TBers and bring Alora to even be closer to 07.