No such thing as a second officer in BA. So Lauren in BA means LoCo capts could if they wanted to join BA and either fly for Lauren or work their way up to Capt in Mainline and all other airlines maintain the status quo, or Lauren not in BA means LoCo capts could Join Lauren probably as f/o's, the Lauren model works and all other airlines suffer a degradation in terms and conditions as a result.
I still think it would be a good idea for you to support the BA guys.