I've known about the Li-2 forever pretty much Juha, but I never considered it a bomber, and it wasn't either.
As for the Ju-290, the LW's emphazis on fighters and more defensive kind of war Germany was fighting at the time of the Ju-290's introduction meant it didn't get the chance to prove its worth in the heavy bomber role like the Allied bomber designs had plenty of opportunity to. But that doesn't take away the fact that it was excellent for the role, being well armed, fast being able to carry a very large loadout.
As for the Ju-290, the LW's emphazis on fighters and more defensive kind of war Germany was fighting at the time of the Ju-290's introduction meant it didn't get the chance to prove its worth in the heavy bomber role like the Allied bomber designs had plenty of opportunity to. But that doesn't take away the fact that it was excellent for the role, being well armed, fast being able to carry a very large loadout.