@maxspongebob in order...

1 - quality/precision
2 - silent
3 - easy to setup/modify
4 - implement the second extruder

Hi people!
I'd like some advice and tips about an idea.
I have a Robo R2 3D printer.
I like the printer area, the visual, and the overall structure.
But as the boards are "limited", I was thinking on replace the mainboard for a Duet 3 and change the stepper motor by a servo-motor.
I confess I'm new on printing hardware and still reading a lot and making some experiments with my machine.
My intention is convert it to high-end equipment.
Further, the changes will include the hotend and so on.

So... is this too much overkill? Waste of money/time? Good choice?

I would be very grateful for some tips and advice on how to improve the printer.