The font and font size default settings for formula elements (variables,
functions , numbers etc.) are Times New Roman or, if they have been changed,
they stay at the changed value for all newly created formulas. This is quite
annoying when embedding formulas into a document with different font settings
(e.g., Arial) -- you have to remember to change the settings when inserting the
first formula. 

There also is no way to collectively adjust these settings after adding a number
of formulas -- you have to go through the whole document and edit each formula
individually.

Both problems could be solved by tying the font and font size of formula
elements to the document's default settings. Another option would be to have
templates in the Stylist for the various formula elements.