Another thing modellers have to contend with if using RTR track is that much real world trackwork is bespoke to the location and can't be faithfully replicated with RTR track such as Peco Streamline.
Compound points are quite common and often there are many curved points of varying radii on the approaches.
When you start planning with RTR track often many compromises are needed to get everything to fit.
Of course if you build your own track, much more prototypical layouts can be produced.