Obviously not taking away the hood; have previously been running with the wrists as my second.
Main question is, for affliction, is it worth swapping out the wrists for the trinket? My second trinket is an 875 arcanocrystal. If I keep the hood and wrists and forego the legendary trinket, my other trinket will be a nice stat stick (int 1712, mastery 1096)
Or should I consider the feet piece as my #2 given the change to how it works?
In your shoes, I'd swap items based on circumstances. Burning Wish, in theory, would be a good choice for M+ runs where you have big trash pulls to blow up with it. Norg's Foresight, on the other hand, would be my go-to for raid boss fights. Those very often have a "stand still then move" pattern that fits its proc conditions well, and assuming you're running MG you really want to keep that Drain Soul channel going when you have to move.
I've got three different Equipment Manager gear sets dragged to my action bar, each a different set of trinkets and legendaries, for easy switching depending on what I'm doing at a given moment. It's a trick that's serving me well this expac.