shin, sorry, but that's not what the evidence suggests re: drinking and breastfeeding. According to the research I have read, the alcohol levels in breastmilk is the same as in your bloodstream, and a unit takes 2 hours to get out of the bloodstream. So if you feed on demand and have a baby like mine was (feeding every 1.5-2 hours for months and months) and drink alcohol, you can't guarantee they won't consume alcohol unless you abstain completely.
Also the effect of alcohol on small babies hasn't been thoroughly researched, but I can't see it being beneficial, since its a poison!
I can see what you're saying about trying to encourage more women to breastfeed and not put them off with too many restrictions. But as its for such a relatively short time in an adults' life, surely it's not that big a sacrifice?