Well I would presume if all stayed the same including the initial objectives and plant capacity as was seen then, then we may have been right on the dot and commercial by now.
From my perspective, the objective has multiplied 3 fold with what they want to do with the HPA plant and I don't see anything wrong with that as long as they are forthcoming with it.
The BFS has been moved back for 6 months and I would presume that has to do with the changes of those objectives as they would want to include the experiences from the revised HPA mission that is to mirror the SGA plant which will IMO prevent any start up headaches they may have in commissioning the sga plants.
Measure twice and cut once I say !!