Your L-shaped layout platform provides opportunities for a track plan that transcends traditional rectangular layouts that are typically dominated by loops of track around the perimeter with some sidings. Many OGR FORUM-ites wish for the space your have dedicated to your Pennsy-inspired layout.
My two-level L-shaped layout is much smaller (15x19 feet) and rendered in a plainer style than your empire with elegantly crafted scenery. You are making full use of Lionel's TMCC and Legacy technologies - a great control system. Cardboard strips and plaster cloth create a lightweight yet strong foundation to support added-on scenic magic. Carry on valiantly!
Some pix of my two-level L-shaped layout are attached -- although modest by comparison.
Mike Mottler LCCA 12394