avoid a costly dogleg to refuel en route
If the a/c is moved for a client, ferry cost/time included in contract.
If a/c ferried for maintenance or relocation of base etc., the cost must have been part of the decision making process for base location.
In the end, if your particular type twin delivers similar TAS with single engine, why not remove the other engine? This will increase your payload (tools, lubes etc.) for the ferry and will make bean counters even happier! (I'm hoping it is them wanting you to save costly dogleg, I personally don't mind the break after 2-3 hrs in the saddle).
Final question. Do you drive your five speed motor vehicle in third, on the red line, to maintain 80mph, just because it is able to?
........wow, which side of the bed did I get up from this morning
......
ps: Management, 6P's