AMS/LIS/OPO/LGW should be a starting point just like it is for the rest of us.
Nice idea.
Ask any easyJet pilot what happened when 'GO' and easyJet merged - nice payout for the GO pilots, bases of choice, part-time contracts - all to the detriment of the existing easyJet pilots, many of whom had been asking for those very contracts and were refused.
So don't expect anything other than that which best suits the airline.