This type of 0 A.D. structure had actually already crossed my mind recently. My opinion is that the crux commissa variation, the one shaped like a capital T (also called a Tau cross, after the Greek letter), should be the one featured in the scenario editor, since from what I've read, the most common, practical, and efficient type of Roman cross (and hence the type that Christ was probably crucified on) was the crux commissa. Here are some helpful links: http://www.bible.ca/d-history-archeology-crucifixion-cross.htm http://www.frugalsites.net/jesus/crucifixion.htm http://www.keyway.ca/htm2005/20050326.htm http://timenolonger.wordpress.com/tag/crux-commissa/