Yeah, if you expect to face multiple opponents frequently you'd need Flyby Attack, Flyby Breath and Strafing Breath (the latter two are in one of the DragonLance books, not exactly sure which one, don't have them at hand at the moment) if you want to tie up a group of opponents with Entangling Exhalation in one breath.
EDIT: Got a name and/or location for that feat, Sinfire Titan?