The City of Melbourne presented a number of their concerns to the panel last Thursday. The full suite of documents is available here.
I have not done much reading but did read their document on Trees, Parks and Open Space. This one. It is written by a guy who seems to be much more knowledgeable in this matter than all of us.
He only presents the case for City of Melbourne but he does cover the Domain precinct (amongst various City of M areas). It is worth reading. My interpretation is he has some concerns but that with some work he would be OK. It is interesting that he notes that the EPRs (the controls that bind the contractors) seem stronger than the EES on tree removal – that is good news and means fewer trees are likely to go.