I am a scientist and engineer. One very useful tool for chemistry is the ability to illustrate the electronic structure around a character. For example the Lewis structure for carbon atom requires eight dots around it. As the atom has electrons taken away this can be illustrated by one or more of the dots being removed. When two electrons are removed from the orbital I would like to put a plus sign over the carbon to illustrate this. This is not the normal superscript or subscript for writing signs for charge species. For example I need to show in something I am writing that an electron has been removed from the P in the hypophosphite structure H2PO2- after it has undergone homolysis (HPO2-) at a catalytic surface. This I can do by leaving one dot over the P to illustrate there is only one electron left in the orbital; then need to show that a further electron is removed and this I would do by having a positive sign over the P. Now chemists face this problem when writing chemical equations all the time. If word could devise a small program which would allow chemists to be able to put dots, plus and minus signs over the letters for an element used in the periodic table it would be very useful. I am sure if you wanted to offer this as a program even at a small extra cost the science community would be very grateful. It might be too tedious to illustrate the notation for all of the elements individually although it could be done. Incidentally I have found a P with a dot over it in the fonts which may do, but no plus sign. At the moment I am faced with paying nearly $200 for a font creation program just so that I can put a dot over a P and a plus sign after the second electron has been removed.
There needs to be more fonts for specialist uses. Word 2016 has dozens, maybe hundreds of fonts, but many of them are either totally impractical or duplicate another.
MS should survey professions and trades for what new fonts or font features they would like to see.
Maybe also improve the help documentation to explain diacritics.
Similarly in electronics etc it is sometimes useful to be able to put a "bar" (same as the - sign) over a character to show it is the inverse in logic circuits. So there might be X and "Xbar". A convenient way to combine already existing characters into a new custom character would suit many fields of science and engineering.