@fester
Having the Poles in Southern France is interesting, but it might complicate the logistics. OTL (and ITTL ?), they were armed and organized on the British model. So, they were attached to British or Commonwealth Armies in Italy and Normandy.
Does it mean that the Allies are moving a British Army in Provence, to boost the 1st French and 7th US Armies ? you might not have the easiest logistics if there is only one Corps in Provence organized on British model otherwise.*
But, post linking of Normandy and Provence forces, we might see the creation a Polish field Army, with the political boost associate with it.
* Note : for all intent and purpose, the French Army was reliant on US logistics.