I think it would be great if Steinberg could update the device manager to be fully customizable and add additional controls/widgets. In that way there is no need to purchase any extra software for editing and managing external synthesizer via sysex. No need to get software like Soundquest, Ctrlr and many others.
But I’m afraid that Steinberg sees this part as a rather exotic relic from the early days which wastes space…probably not in any priority list 