the only public self-reflection they've done regarding the last term is that "Labor ran an effective campaign on us blocking the HAAF for a year" IIRC.
Basically no political party is going to have an open public discussion on this. There's clearly two "factions" of the Greens, one more pragmatic and the other more 'activist'. I think the observation that Labor ran an effective smear campaign on their own unwillingness to negotiate is pretty obvious (not to say that there isn't also some need for a discussion about how much blocking is the right amount). But everyone seems to think the Greens are "this must be perfect" type people despite the fact that they showed in the last term they were willing to reduce demands or vote for things they didn't like so I guess it isn't.
...Max Chandler-Mather's comments about other politicians being mean
Other MPs complained about how he was treated so... (See here).
I think this was the original proposal in 2007 when Rudd was pm. We've been flip flopping on subs for almost 20 years