a 1b + sanguine rod will have a 90% chance of getting 1d6OE+2 slaves in a turn, given no unrest and 5000 population
a 2b + sanguine rod will have a 100% chance of getting 1d6OE+3 slaves in a turn, given.
basically, a sanguine rod counts as +1 blood for the purpose of bloodhunting. the chance for a hunter is 10% +blood*40%, if unrest is rolled above on a 1d400 and population is rolled below on a 1d5000. results are then 1d6 open ended +blood lvl (i think sanguine contributes to this as well, but i'm not absolutely positive).
so a 1b +sanguine is only minorly inferior to a 2b +sanguine. the real advantage of 2b bloodhunters is that you can send them out efficiently w/out first researching and forging sanguine rods.
Mictlan has many disadvantages, but gathering blood is not one of them
