I think you have an excuse for all new (and better) turnouts.
WHat ever you do, too many turnouts bend or break ties - enough to render them useless. Rails that pull loose from their molded base (ties) don't reset, and any bending of rail renders them useless - unless you enjoy derailments.
Switch machines, buildings, and electrical things are worth saving - even if you don't use them. Wood panels and lumber take up too much storage room, but not hardware.
New layouts generally incorporate new ideas and designs.
Excelsior!.