Passo is very good car...
I felt very comfortable throughout the year from highways to rush traffic in cities...
Fuel economy is also good, not that good with AC but still its ok...
Ride is comfortable and spacious from inside, children easily roam here and there within the car 
Huge space for luggage by reclining rear seats...
Parts are cheaper, i bought 1 back light for 5000 Rs. and one fender (for some other car) for 7500 Rs... (Available for sale , silver color)
We have Pkdm WR at home, and i am thankful to Allah that my car is way way better than that in most of aspects...
It is not a sports car, nor does it has enormous pick like WR, it needs smooth calm driver...
Car is stable at high speed but with good tyres...
U can achieve 110-120 kmpl easily, but 140 after some time with effort...
Push start and smart key are very handy options, no need to worry/think about keys...
Immobilizer, rear wiper, folding side mirrors are also very useful on occasions...
Rear window tints are very good (esp for ladies who do Pardaa, as in our family)...
Head light adjustment is useless feature to me...
Horn was very soft, so i had to change it with Pom Pom type...
Front suspension of Passo is delicate and it needs attention in terms of bush and rubber replacement after 20-30k mileage... (vitz has better suspension)
Front Sofa Seats are very useful to adjust an extra kid...
It can easily climb upto Murree and Pir Sohawa, where even some heavy engine cars struggle (saw some corollas crying, of old models, must be badly maintained)...
Stock tyres needs replacement for frequent highway drives, though ok for cities...
Hand rests on both sides of driver are very comforting...
I love gear position of Passo (better than vitz to me, personal choice)...
My car lacks LCD (planning to install one if budget allows)...
My car has extra feature of VSC and Remote Engine Starting (later one not useful for me)...
Glove Box cover in Passo is a blessing...
Central Locking and Child Locks are safety features for children, plus rear seats can be converted into bed for children to sleep on long route...
Sometimes u feel lack of power on economy mode, but with eco mode off, pick etc is good (still not like manual cars as it is auto one)
Ground Clearance is adequate for city drive and better than vitz...
Highly recommended car for small families and keeping for long term in 12.5-13.5 lacs (above that add an extra lac for vitz)
Above all are some random thoughts...