What books are available? Also, are you familiar with the Chameleon Ladder trick? It can get you 9th level spells to go after Epic Spellcasting (though even without it, 9th level spells can crack a game in half no problem). Also, familiar with War Weaver? Finally, what epic progression are you using for Chameleon? An epic feat proposed for it would allow THREE focuses instead of two.
And on the homebrew side, check out Jaerom Darkwind's superb Red Mage retool (it brings the class into 3.5/3.P with ToB and Psionics access).