a wealth of new options for settlers fans

The extension Traders & Barbarians is such a thing as an upgrade. All previous Settlers games and extensions can be spiced up again with the traders and barbarians.
There are several new options, from basic such as "trade masters" to mega difficult such as "Barbarian Attack" and "Traders & Barbarians". For all variants, at least the base game is always required.
Some of the new versions can be perfectly well with the extensions "sailors" and combine "Knight & Cities".
The look of the game is exactly in the new edition as with the other current Settlers games.
The figures are again made of plastic - but does not bother - the figures look even quite good.
Traders and Barbarians can even be combined with all the old settler playing with the wooden figures - which I think is an invaluable advantage, because so well seasoned settlers fans need not shy away from buying.
My favorite in this expansion are "trade masters"; "The Rivers of Catan" and "train of caravans" - but everyone has to decide for himself.
The perfect extension for the Siedlerfan who else already has everything - strong buy recommendation.