PPP - no substantial change, Sindh map should look largely the same, perhaps some change in Karachi.
PTI hold in most seats in KPK. PMLN keeps most of Punjab. There may be some fluctuation in vote percentages in constituencies in rural and southern punjab, but no substantial change.
Overall, I expect a strong PMLN showing, if anyone's going to form a government, it's them.
And for PTI supporters, you may gain some votes here and there and you could still make the second largest party in terms of vote share, but unless you can significantly target PPP in their own back yard or PMLN in their strongholds, you've got no chance of any victory.
The electoral system does not favour parties with widespread national support. First past the post favours two large parties with national appeals, Pakistan's electoral map is made up parties based on provincial and ethnic lines, there are a whole load of parties and splinter movements. And the losers in this system are parties like PTI, it unfairly disadvantages them and gives parties with max appeal in limited areas the advantage.
I'll give you an example, if in 20 constituencies in Punjab where a swing is possible, if PTI gets 30% of the vote share, it may seem substantial but if PMLN gets 40-50%, they may take most if not all those 20, in our electoral system, 30% of the vote may well be totally dumped and does never guarantee 30% of the seats.
PTI folks, for the betterment of your own party, push for electoral change and reform, enough wasting time with party political bickering and obscure accusations of 'corruption' and 'rigging'.