As for engineers carrying out Receipt and Despatch - Why the **** would we pay a Lame over $145000 to push back an aircraft whe he should be doing some value added role and not something beneath him..
5 LAMEs across the country will get this wage rate and you don't need them on pushouts. Maybe one of the 70 AMEs on less than 70K could do the job, after all they are on less than the baggage handlers.
And why would you use an Engineer on a pushout? I'm sure most crew here will have had some issue on pushback before and I suspect that many of them would prefer to be talking to an engineer. This may especially be the case if there is a tailpipe fire or hot start.