There was talk, before the author died, of doing the Flashman Papers, by the same team that did the Sharpe series. They would be colossal, becuase we'd get the following from a very different perspective of history:
--The First Afghan War
--The Schliesweig-Holstein and the Revolutions of 1848
--Taking slaves into America, and the Underground Railroad
--The Crimean War, especially the Thin Red Line, the Charge of the Heavy Brigade and the Charge of the Light Brigade (with an excursion into Tsarist Russia and the beginnings of the Great Game).
--The Indian Mutiny (especially the Cawnpore Siege, and probably the best book in the series)
--Borneo pirates, White Rajah James Brook of Sarawak, and mad Queen Ranavalona of Madagascar
--Heading West with the Forty Niners, Apaches, Bent's Fort
--Taking part in the Allison Commission at the behest of Pres Grant, the culmination of which was the Battle of Little Bighorn.
--The Taiping Rebellion and the Peking Expedition, resulting in the burning of The Summer Palace
--The First Anglo-Sikh War, culminating in the Battle of Sobraon
--The Harper's Ferry Raid
--The British invasion of Abyssinia to rescue hostages.
And a couple of others bits & pieces. All built around a central character who's a coward, bully and scoundrel of the highest order, but lot of fun to watch as he runs screaming from the battlefield, or hurtling out a window, trousers in hand, ahead of an outraged husband.