Is it possible to have latex macros in eps (or some other format) images instead of using fixed text? I want to be able to change some variable names that are also used in figures.
You can use
On my Ubuntu machine I use the program Dia to draw simple vector graphics. If I export the drawing using the GUI, it does not work. With the command line I can pass an option that does the trick.
That may not answer your question exactly, but check out the export settings of inkscape. Maybe you can make it work.