Bloggs:
Using your own words, the only reason that that would happen is to make money, not because "you already run another type of our aircraft".
Running another of their type is quite relevant, due to the discount that will likely be offered for the new type based on previous loyalty to the brand, as well as successful operation in commercial environment. Further financial incentive would be expected regarding the associated sim/s for the same reason. All adds to the bottom line, and would add to the business case for replacement of 717.
Skynews:
Who cares whether you have 747 incorporated in your EBA?
The Bean Counters. A known quantity such as salary, enables costing and revenue modelling to be performed, which ultimately leads to decisions being made.
That's before the failure rate is considered. History indicates that it is considerable, I.e. Props to jet command.
The path from Qlink Turboprop to a Jet at Virgin/Jetstar is a very well trodden path indeed, with little to suggest any systemic issues for the crew involved. Very talented Men and Women this lot, that's why everybody else keeps pinching 'em to fly their jets
Kingswood.