Sending Lenin back to Russia to start a revolution is usually touted as a good idea by the Germans, since it helped to knock Russia out of the war. But the Great War was still lost for Germany, the territorial gains in the East were only temporary. Also, in the long-term, Germany was plagued by revolutions at home, behind the front lines, even while WWI went on and also even longer-term, by an industrialized Bolshevik enemy.
Were there any long-term benefits forfrom sending Lenin back to Russia.