This request is related to the feature added in Change default Project Location #1161. When you uncheck "Use default location" it defaults to the root of the hard drive. This can require the user to drive deep back into the directory structure to get to their intended location.
As an example, I have the following as my default location setting: D:_ActiveProjects\Code\firmware
However, I don't store anything directly there. I never use the "default location". Instead, I might store a project in one of the following locations nested below the default location:
..\arduino\PlatformIO\FeatherM4Express
..\ESP-IDF\PlatformIO\XIAO_ESP32S3_Sense\
It would be a nice feature if the default location setting was honored as a browse for folder "start" location.