The NRL wants to see something specific as far as the Bears branding goes. Theoretically, even if Perth Bears soon to be formally appointed board went with something drastically different, the NRL would just reject it.
Point is though there won’t be anything drastically different (from what NRL want to see) because there will be people with Bears backgrounds on the board too, even if it isn’t overly evident at first glance.
I wouldn’t be worried at all. What’s been proposed looks great and very much honours tradition while paving way for modernisation.