No, I don't think this is possible because the Thursday show draws from the rosters of the two primary shows (Monday and Friday). You can't have a separate brand strictly for the Thursday show. To do what you're describing is possible, I suppose, but it would take a lot of work on your part to edit the matches on each show every week to keep TNA guys off of Raw and Smackdown, and Raw and Smackdown guys off of TNA.