Questions about the Monster Book in other versions.

1st: I don't know, I think it really depends on the person itself. I use it like the Pokédex in Pokémon (yeah, in Pokémon O_o). First catch my favourites, then the rest. Of course it's very hard if your favourite monster doesn't want to drop it's cards.(I've been saying this for like 1 day already, but please Grupins, DROP CARDS D=.)

2nd: Also don't know, but I think that Isaac is going to complete it one day. Hopefully we all can =D.