I would want to know exactly what was repaired before I would be looking to accept delivery of it - with compensation.
I wouldn't be thinking "the professionals are repairing this - not a problem". The report for the incident that somebody linked to stated that external companies were assessing the damage and implied that they would also be carrying out repairs. This puts you in the hands of a VW approved repairer, for what is likely a series of concave dents mainly in the roof and bonnet, maybe the tops of the wings, with smashed front/rear screens (assuming they were parked close together, dents down the side of the car are less likely).
You will most likely be in the hands of a "VW approved repairer", and from past experience, they don't always do the greatest job. I've even had a factory body defect on a new Polo that would have been there since body assembly and prior to painting that was missed by the factory QC and dealership PDI - a pressed edge, making a sharp dent on the wheel arch, perfectly painted, but noticed by me when applying a coat of wax.
No man in a workshop is going to do a better job than the factory robots - dents will need pushing out, which may require the stripping out of trim to get to the back of the dent, and i'd trust a factory paint job over a garage. The dents may be so deep that they have stretched the metal, which mean filling those concave dents or replacing panels. Depending on the colour, replacement of panels but not spraying the whole car may result in shade variation which may be noticeable in overcast light - darker metallics and pearlescents are very hard to 100% match.
When you are involved in an accident, you take it to a good repairer that will get it as good as they possibly can - you have no other choice. But in the OPs case, they have the choice of another replacement car that should be A1/standard factory built.
If you always change at 3 years and have assurances that the car's repairs will not be detectable and they're willing to given you at least 10% off for the inconvenience, then I would think about it, 20% I would snatch their hand off. Any less than 10% then they can forget it - build me a new one and give me some compo anyway for the inconvenience of waiting.
If damage is extensive, it is in their power to make you a new one quicker than a damaged car can be repaired - if they allow replacement orders to jump the queue a little, maybe putting the factory back a week or so - surely they'd do that rather than make all those affected start a new place in the queue again? They can put off standard Golf orders - those that would ordiinarily be getting their car built within 8 weeks of order acceptance. Make someone wait 9 weeks instead of 8, as opposed to a GTI/GTD order that has already waited 20 weeks having to wait another 20.
I'd still be displeased that it was ony after a bit of digging that they admitted to this. Without that hail storm that car would undoubtedly be at your dealership now and available to collect. Were they ever going to tell you? How long will it be before your car gets through assessment and repaired?
