The Regency is a large crag and certainly has climbing other than the documented line on El Camino Royale. The crag is large enough, in fact, that other scrambling opportunities offer climbing with no overlapping area and none close to it, as well as of a significantly different vantage point and rock character. One such line is the NE Ridge.
From the base, head up and North along to the last of the various aspects and buttresses and climb that up over 3 overlapping slabs from bottom to top. The rock is mostly very good and clean. It is a 3-star line.
This route climbs up a series of walls on the Northern edge of the crag, going up and over 2 false summits along the way and up the next part of the formation. This is so 'detached' from the listed route, El Camino Royale, that the listed route can scantily even be seen from it.
Although the rock is given to scrambling/soloing, I suspect a standard light rack could be used to protect it about normally for an easy Flatiron climb. We did not attempt to place gear, however.