Well, seeing as this seems to be the general thread for the discussion of the new items and such, I thought I'd bring up something. I don't think it should be too hard to implement, (Or to reverse-implement, for that matter. o_o )
For those items which would just be added to the triforce list, would it be possible to have a screen flag which would disable that cinematic effect, and just add it to the proper place in the subscreen or game data? (As appropriate.) There may be occasions in which the player wouldn't want to have a cinematic triggered, as well as a side warp.* Picking up any item of the Triforce Pieces class, including custom items, will now trigger the triforce cinematic.