One reason you will not find an editor for android that supports fonts is probably because almost all android devices only come with 3 fonts, Droid-Serif, Droid-Sans and Droid-Sans-Mono. There are some devices that have other fonts, but from what I have seen, they are not "standard" fonts like you would see on a PC/Mac.
Also, the editors are limited because of screen size. You may see better editors come along with tablets, but even then, you are limited in screen real estate since you would need to have the on screen keyboard open with the editor.