I would like to mention that the City of Lights technique is at its best when it is used to think through the various aspects of a specific problem without feeling pressed to aim at only one set of considerations. Using lots of subagents, or using them all the time, is correlated with something being systematically wrong. If you need them, far be it from me to stop you, but I get by with two in virtually every situation where they're called for and have never felt the need for more than six.