Mmmmmm. Not sure about that Peter. I'm in the plastics game and it would still be an expensive gamble to produce the tooling in order to reproduce a good example of the bottle in question. I think the main prohibitive factor is the total quantity. There's only around 1200 L42's in total, then how many of those already have bottles?? the cost of set up is already rising against the likely return. I think a repro bottle would be more expensive than an original.
The repro IWS bracket has not had any impact on the price of an original. Top quality repro from Canada(as currently on that auction site) is around £300 with import duty. An original will fetch £500-£750.
As with anything, not just items related to our game original items will always rule the day!!