Whenever there's a small grey area in Formula 1's regulations, it is guaranteed that at least one engineer will attempt to exploit that loophole.
This year's Monaco Grand Prix demonstrated this perfectly: when it became apparent that straightline mode would not be used and the actuators could be removed for the rear wing, it opened up a small window for the teams to fill with downforce-generating devices. It was somewhat amusing that a handful of teams all embarked upon the same solution.
