What new printer/extruder features do you want?

[clough42]

I would really like to see improvements for multiple filament printing. Maybe I just haven't spent enough time tuning my printer, but the inevitable ooze from the unused hot-end almost always ends up with a nib that breaks the print loose, or drips some unwanted color/material into the print. The temperature drop/retraction method for the inactive extruder works fairly well, and the pillars method wastes too much filament to be practical in my opinion. The retracting hot ends I have seen seem unduly complicated and I question repeatability with reasonable accuracy.

I have seen a couple of clever servo mounted wipers for the nozzles on delta printers, but have not seen it implemented in a prusa frame as of yet. Would it be possible to mount something like that on the X carriage (so as to move with the Z axis)?

It's possible. Wiping will help, but not if the nozzle keeps oozing.