Don't know if it's still allowed, but I'll post my ideas anyway....
A Map from a world where Mehmed II managed to conquer Italy.
The Ottomans don't need to be still staying around pass 1810, really, but at least the scar left on Europe by the Ottoman conquest of Italy must be evident. No "Christians become berserk and then pwns muslim world" and "the inherently damned Ottomons" cliches, nor even an Islam bukkake, because those things will just make you appear unbalanced.
Muslims in the New World
The theme's name is mostly self explanatory. PoD after the OTL death of Roderic of the Visigoths. Again, doesn't have to lead in an Islam-wank. This theme though,
simply can't possibly contain a Christian world that's even as strong as IOTL, mind you.
No Invitation of the Moors by Count Julian to invade Spain
At the very least, not as IOTL....
More successful Christianity east of Oman, in a world where Islam exists!
Yeah, the Asiatic Christians of course. It'll be much more interesting than just a Christian-wank in a world without Islam.
A World without Jacobin Era
World without the concept of Crusade as we know it
A world where a form of Industrial Revolution happened between 1000 AD and 1700 AD.
In anywhere possible !
A Map from a world where any of OTL Yuan maritime expeditions gained more success.
Either to Java or to Japan. Both is fine too
How much more successful is up to you