your intentions really are admirable and I do hope you can pull it off.
Unfortunately, my experience is similar to stopits (except in USA) in that most docs dont go back … for numerous reasons. The foremost of those reasons is that they are not able to practice medicine the way they wish to … its a daily struggle and the setup in pk is so very different. Several family members of mine tried for 2-5 years to do exactly what you intend to do and for similar reasons but ultimately returned to UK.
Nevertheless, I wish you loads of luck.
My only point of disagreement is re competence of india/pk trained docs. It may just be my experience but unfortunately most of my india/pk trained colleagues seriously lack bedside manner and their medicals know-how is often questionable … for which reason many of them end up in fields/sub-specializations that are easier to get into and very different from their original training in pk (cardiologist to pediatrics, or family practice) … at less then desirable locations.
So these folks have the appearance of having done well abroad but they do so at the cost of major career compromises … Yet they do it all because they don’t want to go back to their countries.
and I do hope you can pull it off.