Just got fully caught up on the current season
Spoiler:
Nick dying out of nowhere is genuinely one of the most shocking things from both shows.

I had read that the last episode had a big death so was anticipating something but Madison's absence from the present day scenes (and Nick being angry over something) had me expecting it to be her. Very glad it wasn't though, I know some people hate her but I love her

Althea and John are great new additions

Since Maggie Grace has always been Shannon from Lost to me, seeing her as a character who's so completely unlike Shannon is odd