Found an old Draka fanfic/timeline, "How I Damned the World", which involves this-
and then devolves into this-
Ignoring the latter for a second, which while interesting, makes no sense (why does Satsuma Japan attack Russia? Which Mahdi is it referring to?), could the Marathas have overthrown the Mughal Empire and the Sepoys? And if not the Maratha, which other groups in India?
An unfortunate side effect of this was the stock run on the British East India Company. Much of the Tea Fleet was purchased by the Dominion. What was unfortunate about it was that the Sepoys were not resupplied on time, and the Maratha took the chance to overthrow the Mogul Empire and execute the Sepoys.
and then devolves into this-
1870–77: Pan-Asian War.
The Ottoman Empire was bitter over the slow losses of its territory, and wanted to reclaim its lands from Russia and the Domination. Persia had been fighting a slow, losing battle of attrition against Russia, and has been supporting the Uigur rebels. The Maratha were rabidly pro-Hindu and pro-caste system. They razed mosques and killed any Muslim clerics who dared claim equality between untouchable and Brahmin. In China, the Emperor claimed Turkestan as part of "The Heavenly Kingdom." Also the religious claims made by this "Mahdi" were in direct conflict with those of Emperor Hung Hsiu Chuan, and there are border clashes in Manchuria with Russia. The three sides thus became Russia and Domination vs. Ottoman Empire and Persia vs. Taiping China and Maratha India and Satsuma Japan.
The war began as a series of border clashes between Russia and the Ottoman Empire, but quickly grew into a miniature world war. The Domination invaded Turkey. In Japan, the Satsuma bowmen defeat the Choshu musketeers, and the Satsuma Rebellion is successful. The Japanese (mostly Samurai) then proceeded to invade Sakhalin Island and attack Vladivostok.
Ignoring the latter for a second, which while interesting, makes no sense (why does Satsuma Japan attack Russia? Which Mahdi is it referring to?), could the Marathas have overthrown the Mughal Empire and the Sepoys? And if not the Maratha, which other groups in India?