I admit that I'm dabbling in an area I don't know too terribly much about, so bear with me.
What if Britain had decisively won the Great Game - by war or other means - and absorbed Central Asia into it's empire or sphere of influence before/from the Russian Empire?
How far would England's claims into Turkestan go? Would they merely go for a few buffer states to protect India from Russian expansion (which seems like their actual goal IOTL), or could they go further and absorb Khiva, Bukhara, and Kokand into their Empire?
How would Central Asia develop under British rule rather than Russian rule?