Being a person with a poor name memory, I am really frustrated with the nRF SDK's naming conventions. For example, let's take a function
bsp_btn_ble_on_ble_evt()
Is that a descriptive name, eh? Every time I hit a function name, or symbol, like that one, I have to (re-)check what actually was its purpose. Instead, wIth good naming conventions, all that frustrating document and code browsing work could be avoided and huge amount of time would be saved.
If you really care about your customers and easiness of programming with your great hardware, you could start from the very basic things. Use descriptive names in your code, please.