Now another question rises that what is the second best location for PTI public gathering and answer is very complicated. PTI already said that Karachi Jalsa would be bigger than Lahore Jalsa; it means Tehreek e Insaf will not choose Nishter Park or same size of any other ground.
A road Public gathering on MA Jinnah Road or Shahra e Faisal is also possible but it will be very odd. I think new venue should be vast.