I built a ladder braced floating bridge guitar once. It was not as small as a parlor but still a small guitar, about the size of a classical guitar. I never did like the sound of it and have since re-topped it but it could have been for various reasons as it was one of my earlier guitars. I based it roughly on an old Gibson that came through my repair shop and honestly I didn't like the way that guitar sounded either but the owner loved it
The Gibson was a pinned bridge and I thought that the addition of a tail piece would enhance the ladder braced top as it gives more downward pressure on the top (like a jazz arch top or Selmer) as opposed to a pinned bridge. Maybe what it did was enhance the ladder bracing and I simply don't like ladder braced guitars 