I had my custom Luna made with a slacker seat tube angle because on my other bike my weight was sort of balanced right on top of the crank, like a unicycle effect. I felt my weight too far forward onto my hands, and could not 'get behind' my pedaling. When you feel your weight falling forward most people just label it too long a reach, but I found it all works together- head tube angle, seat tube angle, top tube length, etc......to either make you comfortable or uncomfortable. Weight balance is a big part of the whole reach issue.
On my Luna, even though the reach is pretty similar to my older bike, the seat is further back from the crank and I no longer feel like my hands have to keep me from falling forward. Now my legs do that automatically. Thus, it no longer feels like the reach is too long.