two minds about these things.
with late light drinking (in the ACT it's until 3 AM and must resume at 8 AM, unless the pub is locked up and people remain inside or you ignore the rules and stay open all night, which pubs and clubs are allowed to do if they restrict their service of alcohol) people tend to expend all of their energy and be less trouble as the night goes on but you also have to deal with lots more drunken fuckwits as well as injury and general drinking problems -such as spew, passing out and so forth- but they can be easier to herd and handle.
now, if you kick everyone out at say 12-1 AM, like they are thinking of doing, you get more people drinking earlier and then you get a mass of exceptionally drunk people wandering about, waiting for cabs and wanting to drink more.
This will generally lead to more fights -especially at the cab rank, which is also a trouble spot- and outside clubs.
will also mean more hamfisted bouncers doing more harm (which I despise, especially since I'm going back for my security licence and am being constantly lectured at about proper conduct at clubs) and more scuffles and fights in the clubs too, because people are getting more plastered early.
this will lead to more and tenser work for the police -especially in regards to fights and drink driving.
there are a few positive aspects to early lock-outs but not really enough to justify doing so.
but, in all honesty, I really don't care unless I go back to being a bouncer (which I don't) or if it affects the few live music venues that I attend here in Canberra.
I haven't drunk in 8 years and generally despise going to clubs and venues anyway.