They should just take the straight-to-DVD and BluRay route, that way you won't have scores of viewers who can't watch the episodes because they don't get Disney XD. Edit them together into one long movie, package it in a Collector's Edition box with at least one bonus disc about how they were made and the history of The Clone Wars
over the years.
Disney will just do something along those lines sooner or later anyways, so just go ahead and get it over with. A lot of people aren't going to want to pay a bigger bill just to add XD to their package and watch a few episodes in a limited run.