I, too, have been thinking about how to do Epic ToB stuff. I love the flavor of the book and system as-is, but my game's setting was always designed from the ground up with Epic in mind (I extended all base class progressions to 40th level, among other things). This means that to incorporate ToB into my game, I must include Epic progressions for everything. The major difficulty, as I see it, is how to do "10th level maneuvers" (really, anything maneuver-related beyond 9th level- particularly since we only ever get one example of a 9th-level maneuver per school).
I've had two ideas for how to do this: first, using the existing (admittedly broken, but perhaps tweaking can fix this) Epic spellcasting system, one can use the existing mechanic of a "favored skill" for each of the Sublime Way schools to create a system for doing Epic maneuvers. For example, if one were trying to create an Epic Diamond Mind maneuver, the skill check to initiate said maneuver would be Concentration (instead of Spellcraft, as it is for existing Epic spells). The official maneuver system doesn't really use this aspect of the schools; the skills are mostly irrelevant to use of the maneuvers except for Tiger Claw. Using this mechanic for Epic maneuvers would change this aspect of the system, and really force martial adepts to keep their favored skills maxed out.
The other idea is based on another mechanic I've long used for beyond-9th-level effects in my own game: individual spells are picked up as feats. These feats have other specific spells as prerequisites, among other things (typically they also require certain ability score thresholds, and a caster level minimum, for instance), and every one of these super-spells deals ability damage to the caster and carries an XP cost to cast. Since the existing ToB maneuvers look rather feat-like, with so many of them having prerequisites (and, in fact, being "buyable" for a feat if you use Martial Study and Martial Stance), this idea would probably fit rather well with the existing system in a mechanical sense.