Here’s that second unit of Doom Reavers that made it to the group photo. Tats mostly let the opponent know they’re a different unit, but for me looking at them from the back had to make a tiny mark on their bases. Even if they have tats on their backs, its hard to easily see how the units are standing (specially if they’re very close) and we know how important placement is for them (berserker, low CMD, abomination rule for other models, weak against AOEs, etc).