Plenty of system-related settings are available within MSI's Dragon Center software. The tool takes data from AMD's own Ryzen Master and uses that to deliver the system information readings and the ability to change settings whilst inside the OS.
Fan control within the OS-based software is strong, with the similar 4-point curve that we see within MSI's UEFI.
Anything that can be done with MSI's physical Game Boost dial can be done via this OS software. That, in my opinion, makes the onboard dial wasted PCB real estate that could be used for something more useful.
RGB control within Dragon Center is solid, with the ability to adjust settings such as colour, brightness, and speed. MSI offers a variety of operating modes for the RGB LEDs; I particularly like the temperature-driven colour scheme which can be useful if you're generally interested in how your system is operating. Support for Philips Hue is also a cool feature.
Gaming Mode can be applied to supported games, though I've yet to meet any enthusiasts who actually use such a feature. There's also the ability to control network priority to aim to minimise online gaming hiccups.