I think 2 thoughtseize are too few and 4 daze are too many (you want to see 1 in almost every game, but you generally don't like to see the second copy): I prefer a 3/3 split.
3 animate dead, thus going to 11 reanimation spells with only 8 discard outlet (10 if you plan to 'seize yourself, but it must be done only if you are in a pinch), may be too many and remember that it can be destroyed by adrupt decay. Maybe you can shave one for an
hapless researcher: it's a discard outlet at instant speed (so lets you play around tormod's if you cast exhume and have a creature in hand), it protects your monsters from edict effects, it blocks goblin lackey and bonus style points if you kill your opponent with him and elesh-norn :)
Many people are sure that griselbrand has to be played as a 4 of, I like the 3/1 split of griselbrand and jin since there are situations where you cannot afford to pay 7 life to draw and jin may be superior thanks to his discarding ability. I think Jin's role is somewhere between griselbrand and iona (draw cards, stop combo) but I'm pretty sure I want at least 3 copies of griselbrand main deck.
I believe I would change 1 of sphinx, inkwell or archon for the third griselbrand.
So, considering that reanimator already has a positive matchup against Sneak & Show, but suffers from white decks with sword to plowshares, I would go for
-1 daze, -1 animate dead, 1 blazing archon (moving it to the side)
+1 thoughtseize, +1 hapless researcher, +1 griselbrand
I'm interested in your considerations.