Till yesterday mods of our neighborhood are damn sure that RS won't be the next PM of UK. We should look at their faces now 😀
Bangladesh will cherish, not sure about Pakistan. Pakistan will care. Now your diplomats will have an uphill task in securing your home interests especially "Kashmir"
Indian ABM though inadequate is already functional
Issues
1.DF-17 isn't cheap.
2. Not sure if China is willing to supply Pakistan with such missile system. The question of targeting Indian AD won't arise if China isn't willing for the same
3. You need real time info about the target position...
Add to it, roads almost always aren't straight. The distance of travel is more than in the image.
Secondly the CPEC goes through one of the highest valleys making it less likely to be economically viable