Castling. No castling.
This move makes from little to no sense in this context. In 2p chess has the merit that it´s not always about making the king safe, it can be often times an aggressive move. In 4p, however, it´s almost always a defensive move. It may flop hard as a defensive measure, but anyways, that doesn´t flip that it´s never an attacking purpose. I can´t speak for everyone but presumably, one plays for the battle, for the fight, not to be safe. Thus no point in adding an unnatural move that breaks locality and simple causality. The simple motions suffice. Less is more.