Plenty of background & discussion about alternative sites here; http://www.bigfooty.com/forum/threads/new-facilities-update-springfield-doa.1062473/...and how about the Queensland tennis centre at Yeronga. My point being I have no information about alternative venues and their pros and cons. It is still a mystery issue and while Bob Sharpless holds dual positions with Lions and Springfield Land Corp there will be suspicion around this issue.
All board members hold a dual position (gotta have a day job). As TBD mentioned, Springfield is all but dead, and the new CEO, board members and a bit more transparency should keep it in check.