I would love to see the USL leagues get in, or at the very least USL D1. I can honestly say there would be many researchers ready to go if it was, including myself. In fact, some of the teams in the USL get higher attendances than many League 1 sides (My beloved Portland Timbers had an average of 8,567 fans a game last season, which would put them above Southend, Peterborough, Scunthorpe, Colchester etc... and Montreal got even higher).
There is no lack of researchers here, I know many who love this game and would research for it. Just thought I'd make clear that the lack of researchers point is dead wrong.
Other leagues I would love to see added would be the J-League and Serie D.