Jus Soli had its time and place where it made sense....i.e large areas needing to be settled in the Americas...and also expansion westwards into territories of Mexico where US didnt want to drive away the settled population when they took that territory.
Hence all of the Americas largely has this policy for citizenship still. It is an artefact of the earlier days for sure and has to be revised big time imo.
Pakistan already has done something good regarding this, its not an unfettered jus soli (like US) but it has been correctly interpreted (imo) by Pak supreme court to concern only legal births (i.e the people have to be there legally in Pakistan) for the law of citizenship to apply in first place. i.e they cannot be refugee (legal but special clause) or illegal.
This is actually a debate going on behind the scenes in US right now (i.e should the reading of jus soli concern only those born under legal circumstances)....but the process will be long (result is uncertain too) and tons of damage has been done and will be done in meantime.
Imran Khan is just verbally doing this for some kind of votebanking/optics....the actual law/court hearing of the issue/ruling is quite different in Pakistan. Jus Soli only portends to those born under legal circumstances. Which means I.K has to go through a legal process to get that law changed to a more liberal reading, which I think will get much blowback/resistance from both his own party and of course all the others (esp those in Sindh like PPP) too.
A switch to blood-right citizenship (jus sanguinis) is also a fair approach or some composite of the two (that a few european countries use). In fact jus sanguinis (India uses only this as another example in your list) is the default approach existing worldwide I believe, jus soli is just added on top (otherwise kids born to US parents residing outside the country could never get US citizenship etc, this came into the limelight notably regarding Ted Cruz in 2016 etc). But a switch would need again the citizenship act of 1951 in Pakistan to be removed and replaced by a new one....given its a fundamental change. I think just keeping jus soli but adding sufficient clauses would be the right way to go....easier and more prudent. But of course the PM would need to be supportive of that tack, this speech shows quite the opposite desire....but how deep is it w.r.t words versus actual policy? We have to see.
@django @saiyan0321 @Psychic @Indus Pakistan