the answer to getting more viewers on 205 Live is simple. Bring back Talking Smack as a weekly show and have it air at the same time as 205 Live using it not only as a post-show for Smackdown, but also to build up hype for the 205 matches. basically make them the same show.
Start off with the usual opening monologue for both 205 Live and Talking Smack, then a 205 match, then a 5-7 minute interview with a Smackdown star, then back to a 205 match, etc... they may have to shorten each show by 5 minutes or so to make it work, but both the TV audience and the live audience are both happy.