The only source of networked marker lights is the skyray, and you can't take them in the contingent without taking 3+ hammer heads. This means you just won't see sky rays in the taucurion at all, and if they're in a cad they can't combine fire.
I've read the book quite a lot and while the contingent is really strong, it shouldn't be too out of whack with the rest of the 7.5 books, if it is at all.