For historical reasons, I understand that a proton's charge was assigned the label of "positive", the electron's charge was assigned the label of negative, and, crucially, equations of current in E & M are written with the notion that current is the flow of positive charge despite the rarity of actual flows of protons in real systems (which I understand are mostly biological systems).
If the possibility existed to instantaneously and at no cost, retcon these associations such that protons have a negative charge, electrons have a positive charge, and current remains the flow of positive charge, would there be any beneficial or detrimental outcomes?
For instance, would there be:
- new interpretations of physical laws that would provide different or better insights into any relevant subfield of Physics
- significant simplifications to notation in any field of Physics or Engineering
- significant increases in understanding in the fields of electricity, electronics, electrical engineering, radiation/radiative transport, etc.
- a noticeably easier learning curve for any subfield of physics dealing with the concept of charge
Additionally, is there a permutation of positive charge, negative charge, and flow of current definition that would improve upon the one I suggested?