I would like to share my experience with S3D 5.0.x interfaces and give you that I had found to improve UX on dual extruder mode.
With thoses corrections, I hope your application will be the best, I won't need other slicers any more !
1. Multi extrusion assistant
I don't know if it the French language application witch is the only impacted, but I think it would be more intuitive by ordering Left extruder on the Left side menu and the Rigth extruder on the Right side menu !
2. Extruder coloration
Model's color could be identified for each part of models printed by each extruder...
For exemple, in FlahForge's app Left extruder is in dark green and the Right in dark orange.
3. Model's part selection
When dual print helper's group is crearted, I can't identify whitch part of model is printed by the right or the left extruder...
If I want to select one part, all item's from the group are selected !
It would be more intuitive, like my precedent review, that each item is identify by an extruder color.
4. Printing rendering
Finally, we would be able to select each extruder from the construction view, to inspect extruder.
When we select an extruder, only these parts are shown in bright light, other parts switch in dark light.
[I'm not able to attach another picture here !]
Thank you !