Feature Request: Multiple Lines of Captions or Subtitles

One thing that could be done easily (although with the old clunky workflow) in the 14.9 version of the captions workflow, but which seems to be impossible in Premiere 15, is perhaps only of use to those of us working with transcriptions of multi-party conversations in video: namely to have multiple lines of captions/subtitles, probably placed differently on a single screen, representing the talk of multiple participants.  In vers. 14, since the captions are output into a project as simple video overlays, you can set these up as you need.  However, in the new, otherwise much better captions workflow of version 15, apparently only ONE caption line can be selected (and thus output)at a time, if I understand the system properly.  Why not add what should be the simple abiltiy to allow multiple simultaneous caption lines (which may be synchronized differently one from another).  It seems a pity to have to do what I have now done, namely keep a separate version or Premiere 14.9 available just to be able to do that with my previously multiple overlapping .srt files,.