I'm thinking of putting my Y-Splitter upstream of a remote direct drive extruder mounted on my effector (I have a delta) then using secondary extruders to handle the changes and let the RDD to do the precision printing work.
This would allow the long retractions needed for a splitter without the downsides of a Bowden arrangement.
The other thing I'm considering is the prime cup up high, maybe with a wiper on the edge - with a delta, Z is just another direction and Z moves are as quick and accurate as X and Y ones. No need to waste material building layers of a tower with no changes.
Has anybody had any success with either of these ideas?
[edited for spelling and clarification]