Summarise a Board Game Expansion's Impact Before You Add It to Base Sessions

The expansion box promises more content but says nothing about how much longer sessions will run or how much extra complexity your group is signing up for. This summarises the real impact on decisions, complexity and playtime, then tells you whether to ease it in gradually or throw it in all at once.

Paste in the rules changes or new content introduced by an expansion for {GAME_NAME} below. Summarise what the expansion actually changes about how the base game plays: new decisions, added complexity, and playtime impact. End with a clear recommendation on whether to introduce it gradually or all at once with a regular group.