I think you took the wrong lesson from the gf geometry. It wasn't long bike short stem. or maybe it was, but that was when "short stem" was only 100mm, instead of 120mm. The main point was always the fork/HA relationship. Steep HA, lots of trail(not sure of correct terminology, the forks dropouts where further forward then most) so that the steering would be quicker and it would still handle speeds. Now days every bike worth looking at slaps a short stem on there, slacks out the HA, and calls it a day.