The Arkham Horror LCG adds more Campaign feel to the world and adventures of your investigators in Arkham Horror. I loved the concept for an LCG that was ready to play with a single investment, instead of each playing having to shell out to build their deck. The revised version makes it even easier by having the investigator decks pre-build to make set up a breeze and it allows players to get a taste of the mechanics, get hooked in the story before investing in future expansions.
If you are looking for a card game that gives players a chance to build their own unique decks as you advance in the campaign along with some legacy style decision making that impacts your teams adventures from game to game I would recommend picking up Arkham Horror LCG. The card art is beautiful the designs are thematic and nice to look at and the variation in decisions/occurrences means each game feels unique even when revising the same campaign chapters.
Heroes can take damage, die or perish but continue in the campaign which gives it a bit of table top RPG or legacy game feel with less intense price tag and rules review.