This is a completely innocent question trying to figure the objective Chabad reach-out position for Gentiles:
[Some] members of the Chabad movement are involved in reaching out to Gentiles and teaching them the 7 Noachide Mitzvos.
From "non-jewish-altars", Gentile altars and sacrifices for G-d are allowed at this time (thanks JoelK)
Rambam wrote that a Gentile that does Mitzvos receives a reward.
Is Gentile sacrifices in this time a part of Chabad reach-out agenda, and if not, what are the considerations - why not endorse them to sacrifice to one G-d?
I would love to hear the original sources of Chabad, not what others think about them, please.