1CP Pathfinders makes them incredibly awkward to put in builds: the early CP tracker isn't a consistent timer.
The current cooldown based solution is much better for preventing easy Pathfinder spam.
CP 0 units are map depend.
For instance they can spawn allot closer to the front-line from "rail and metal" on south side than in the north.
A far better solution imo would be for this units to become build able from HQ so that it does not upset the built times of faction allow numerical advantage.