I think it is inevitable so we will need to adjust. Some folks will even profit from the change. Take a look at an alternative that was given out at last year's Vineyard Derby.
http://www.pallatrax.co.uk/Products/StonzeSystem.aspx
I haven't tried them yet but folks that make their own sinkers could switch to rocks and wouldn't have to worry about the toxic fumes of lead!
Threaded Mode