A major modification to the last corner has been done. It has been made into a hairpin, effectively. It simply extends where the left-hand component is. The previous version was found to have not significantly achieved the desired aim of the extra objects.
This one has the added bonus of adding a passing zone.
Final version is edited into the OP
d
This one has the added bonus of adding a passing zone.

Final version is edited into the OP
d