My 16 m/o gets goat milk mostly b/c her brother gets it and that's not a battle I want to choose.
I think a little is ok, but the risk is that if she is getting her calories/liquids from milk, she'll eventually need breastmilk less (thus also eventually weaning early if you continued with it).
I wholeheartedly respect that some people are not ok with introducing that risk, but I haven't noticed a difference in how often she nurses, so
.
ETA: I realize after re-reading that you weren't probably talking about the weaning risk, sorry. As far as benefits, again, I know a lot of people totally disagree with me, but I think that the goat milk my dd gets just enhances her nutrition. Lots of good stuff in raw milk, methinks. Hope that's a little more help!

I wholeheartedly respect that some people are not ok with introducing that risk, but I haven't noticed a difference in how often she nurses, so

ETA: I realize after re-reading that you weren't probably talking about the weaning risk, sorry. As far as benefits, again, I know a lot of people totally disagree with me, but I think that the goat milk my dd gets just enhances her nutrition. Lots of good stuff in raw milk, methinks. Hope that's a little more help!