Why whould you ever choose Mictlan?

[Nagot Gick Fel]

Peter Ebbesen said:
I was comparing 10 turns vs 10 turns as an alternative to the 30 turns vs 30 turns first postulated by me.

Then, unless I missed something, your calculations are wrong: an Acolyte only costs 134 gold over 10 turns, 167 is for 20 turns. Then, your statement

even a mere 10 round life expectancy changes the relative costs to 107 vs 167, or a cost of 56% more.

doesn't make any sense at all, since relative costs over the same amount of time are independent of time: the total cost a sacred unit X over T turns is

TotalCost(X,T) = BaseCost(X) + (BaseCost(X)/30 * T)

Thus

TotalCost(MictPriest,T) / TotalCost(SangAcol,T)

= (BaseCost(MictPriest) + (BaseCost(MictPriest)/30 * T)) / (BaseCost(SangAcol) + (BaseCost(SangAcol)/30 * T))

= BaseCost(MictPriest) * (1 + 1/30 * T) / BaseCost(SangAcol) * (1 + 1/30 * T)

= BaseCost(MictPriest) / BaseCost(SangAcol)

= 0.8

As you see, the relative costs remain the same (20% less, or 25% more) whatever value you give to T. So, where do these 56% come from?