No thunderbolt 3 dock offers the display output options, especially for high refresh rate external displays as a eGpu, even if the external GPU would only be used as a charger + monitor output dock, it would make the user experience of a M1 MacBook Pro with multiple high refresh rate external displays so much easier.
Please consider eGpu support on Apple Silicon for user experience alone, sure performance is important too but don’t think of eGpu as a performance only upgrade.
As a developer a multi monitor setup high frame rate should be possible with one cable, currently on Apple Silicon Macs it’s not possible.