The Lancaster carried some really big bombs. The biggest bomb ever dropped was the "Grand Slam" bomb, a 22,000lb bomb that fell to it's target at supersonic speed and destroyed it with "earthquake waves".
The 12,000lb "Tallboy" was a streamlined bomb, one of which was used in the sinking of the
Tirpitz.
Then there were the cylindrically-shaped "cookie" bombs, made in 4,000lb, double-length 8,000lb and rare triple-length 12,000lb versions. Alot of Mosquitoes were modified to carry the 4,000lb cookie.
And there's the infamous 9,250lb Barnes Wallis "bouncing bomb" used to break German dams.
If we get some of these bombs, then we had better get a bigger crater and explosion too, or dropping twice the B-17's bombload in one go just won't have that feeling of incredible mass destruction.