Thomas, I was changing things to add your half curves and after I got done, I ran some simulations and wasn't happy with the play value. The culprit was the placement of the crossover switches, both on the curves like I've had them and on the straights like you've had them.
So, I moved both crossovers to the upper center of the runs. I also moved the storage tracks down a bit so I could move a short straight track between the lead switches to reduce the "S" curve effect.
That resulted in this configuration that allows you to transfer from the outer run to the inner run and immediately reverse the train then transfer back to the outer run. Before you had to travel quite a distance around the inner run to reverse and then transfer back. It was clunky and inefficient.
Adding the half curves was a good suggestion given that you decided to widen the layout. I'm not sure what to tell you about the 45° or 60° braces. In this photo the top of the left 45° brace is at the 5' 4" point and the bottom at the 3'10" point to give you enough clearance at the top. If you want 60°, then the top moves to 5'6" and the bottom to 3' to give you enough clearance at the bottom. There are still 3 places where the tracks don't join in the software. If you want changes or don't like this version, just let me know.
