Ha Ha, that is quite funny.
However to be fair to GW i think they made a rod for their own back by converting the ENTIRE metal range in one go.
I think they should have started with some of the new figures\sculpts as the test, then gradually bring in the older stuff over a period of months etc.
I bought 2 finecast models when they came out, an astorath the grim, and terminator wolf lord with axe.
I had the metal astorath and when comparing the models the detail level was considerably better with finecast, specifically around the skull shoulder pad, however there were some small bubbles, but nothing major.
The wolf lord terminator, had one major issue, the front of the shin armour has a big-ish divet in it, which will need some filling and sanding, but that's it.
So i must have been quite lucky. However i do know a lot of people had lots of issues, that were more than being a bit pissy, they had whole arms or heads missing etc.
GW will sort it out, they always do, however i recently bought a Lufght Huron model from FW, and the right5r arm had a bent and broken shoulder pad edge, a small thing, but a nuisance when painting for competition etc, i e-mailed to ask if i could buy a replacement, they simply asked for a batch number and said they would send out a replacement free.
Excellent customer service, i even get to keep the slightly damaged arm, which is handy as i got a spare left gun arm in the bag, so i will have a pair of very gorgeous arms for a conversion i may fancy.
happy days.