Mate, anyone with at least half a brain can see that there are obvious issues with different T&Cs and the consequences of a RIN or otherwise ending up involuntarily on a new type and this is being discussed with the company.
The company is keeping the $40-50m cost of each 747 D-check up its sleeve as the excuse to blame the pilots if the deal doesn't come off in time. The other issue is that oil is freakishly low and if (when) it goes back to $110 per barrel then we (international) will likely be losing money again. I reckon most guys are more than open minded to restructuring the agreement to avoid the massive spikes in unit costs on long sectors, provided that the overall take home pay is reasonably maintained. The traditional overtime sectors may end up being the junior trips!