The biggest issue comes in the form of logistics, any offensive would be large in nature and requires a lot of logistical support to maintain its momentum of advance. So you would need large supply convoys which would also face an increased strain as Indian troops would be facing an increased amount of attrition due to the environment hence more supplies required, more equipment to ferry that etc. Couple this with the limited infrastructure of the region, one example being the lack of properly paved direct roads that can support some of the soft skin vehicles. You'll possibly be facing a supply situation as bad as the German 6th Army if you don't plan on the Logistics side. If the supply situation can be resolved then it can be a deadly incursion indeed.True. Then we have to sit and solve the environmental problem that a force attacking across the fine-grained sand of the Thar would face.
That desert kills tanks.
But, of course, you already know the answer to that problem.
Russia-Ukraine conflict should really highlight how vital it is to have a strong and robust logistical plan for any offensive, an environment such as seen in the south requires intricate planning in that regard.