Stock pickup is fine if you bend the pipe down closer to the pan floor. (Almost touching is fine due to the screen that hangs down below the pickup tube...)
I'd like to have a custom pickup, but that is going to cost you some money, and it's going to slow down the development of this pan. (Trap doors, scrapers and baffels will need to accomodate either the stock pickup, or your idea of a better design, but either way, it's going to cause some headaches, and I'd think the better pan design will over come some lacking design work on the stock pickup...)