Thanks Mano,
There have been 3 companies look at the car and all have submitted similar estimates to repair. AAMI took ages (2 weeks) to finalise assessment as there were some concerns for motor etc, they stripped the thing down before final decision was made. I've argued for a new car but they just won't do it.
They can't cut and shut chassis anymore (especially from a big insurance company, can you imagine my law suit if they bodged it?), that's illegal, they can fix designated repair zones though, there is an outer and inner rail with a crumple zone, they remove a repair panel (where the crumple zone is) on the chassis, remove the inner rail, straighten the outer rail and iinsert a new inner rail and weld it back together. Designed that way apparently.
Out of interests sake, I asked a lot of questions of the panel shop... Subaru has a 3mm tolerance with their chassis from the factory, BMW has a 2.5mm tolerance. The laser table they are doing my car on, has a 0.1mm tolerance, not that I really believe it but theoretically it may actually come back straighter than what it was
As you can imagine, I was very concerned for the quality the Lib would come back, after seeing the M3 they were working on and the professionalism of the staff, I am somewhat more confident that they will fix it right.