For first layers, sometimes where there might be text. A extruder width of 0.2 works great. However layers after that might not be so important (more internal stuff anyway). So the default 0.48 or whatever is fine. Though it can lose some detail if using 0.48 all the time, and 0.2 all the time takes twice as long as results in not as strong part.
So could a feature be added to allow custom extrusion widths, either by layer, or automatically based on the level of detail on the layer ?
I know there is automatic layer height.. but that's not the same thing (but similar concept I guess).
The overlap settings don't really help either in this case. IT may help with the text. But later in the print there are very small areas which end up "blobby" because of to much overlap.
These 2 images show, 0.48 width and 0.2 width to illustrate the problem. Where gaps appear with 0.48 width.
In this case, 0.2mm on the first layer and the rest being 0.48mm would work perfectly.