Is there a point to the animus fragment or are they just there to collect?
If you collect them all you get the "Dead Man's Crew" (or something like that).
Basically makes your crew on the Jackdaw all skeletons.
ETA: It's called the Deceased Crew cheat. Youtube video
And I read somewhere that you get the cheat if you collect all the animus fragments, but IGN says you have to complete 100 animus challenges
. So I'm not sure - I haven't gotten it.
This post was edited on 1/3 at 10:43 am