I think you are full of it Chocks. l'll bet you don't even know the Townsville refueller!
Obviously nobody has told Jetgo they have "not long to last"... take a look at FlightAware:
History ? VH-JZG ? FlightAware
History ? VH-JTG ? FlightAware
History ? VH-JGB ? FlightAware
Jetgo have they gone?
... Gone flying!!!
Actually what I hear is all positive and that Jetgo is one of the only operators who actually pay their bills on time.... maybe you should give JR a call and give him some business advice!
As for the security charges XPT I don't think it is quite as big a deal as you think... an extra $12 or so for inbound pax is realistically just part of the price these days for flying into SYD or BNE. Although the whole security requirements are BS they are a fact of life we have to deal with... Jetgo could have bought cheaper ERs and avoided some security screening requirements, but I reckon having the extra MTOW on the LR allows their ERJs to tanker fuel which would save them a lot more money not having to pay the ridiculous fuel prices and call out fees at country airports.