FWIW my home layout is star wired. Our club modular layout is bus wired. Both have DCS and TMCC. Both run.
With all of those stub sidings, I would urge you to wire them so you can turn the power off. The modular layout has an 8 stub track yard that measures ~20' long. When the yard is powered we have serious signal strength problems on the 20x40 mainlines (2). With the yard setup dead-rail, we're seeing signal strength of 10 everywhere.