I'd like to underline that, for all its warts, MS Word has an excellent formula editor (which even supports common LaTeX commands as autocorrect). I know that it's a radical idea, but if the goal is to let scientists spend less time writing formulas, maybe we should consider letting them use modern software?
ps. MS Word can copy formulas into the clipboard as LaTeX expressions, should your journal require LaTeX papers but you dont want to edit your formulas like a caveman.