Good if all that happens, but here are some points to see it in a more realistic manner, sans the hyperbole:
1. Industrial park at Gwadar:
a) How much stake Pakistani govt. and/or Pakistani companies hold in that park, or is it a Chinese business refining crude oil on the port and reducing the transit cost for themselves? If Pakistan's contribution is only the piece of land, then I doubt Pakistan is gaining much in terms of revenue. In fact I am expecting that China will get more than a fair share for the unequal nature of the China-Pakistan relationship and Pakistan's dependency on China. But I may be wrong on the last part.
b) China has this tendency to avoid local recruitment and getting the job done with Chinese workers to the extent possible, so how many jobs will go to Pakistanis, especially the high value jobs, remains a question.
c) Even if all goes in Pakistan's favour, still it's a transit route with a refinery and port, it will have some positive returns for Pakistan, but not to the astronomical proportions that Pakistanis are projecting in hundreds of threads. especially when Pakistan is not a tiny country but a population of 150 million!
2. Jobs from road and pipeline making:
That's temporary employment if Pakistanis are getting that job, the road and pipeline will be finished in a few years. Roads also boost business activities, but for whom? Pakistanis seems to be giving away all manufacturing activities to China and importing everything from there, even silly handbags and umbrellas!! That road might be used for importing Chinese stuff than to support its own manufacturers who must be distressed by Chinese competition in everything. So who will get richer here remains doubtful.
3. Transit revenue:
There is hardly any clarity on that, China is investing and making all the infrastructure they need, and China also has upper hand in the relationship, and they are hardcore business-minded, so Pakistan might not get much in terms of transit fee.