I agree multitabs just make it more complicated when viewing multiple sketches.
Having the ability to save some steps by having memory usage in the ide would be quite helpful.
Line numbering is top of the list, its one extra chore, cut out

Maybe a beginner, intermediate, professional mode.
Beginner being a basic form, intermediate a few extra & pro, a complete ide.
A way to switch between modes as one becomes more affluent?