Straightforward DOM <----> transfers.   Straightforward DOM <----> transfers on same airline
Straightforward layout.  International - in the middle.   Qantas ... all over 
there.  Virgin .... over 
there.  The others ...
 waaaaay over there.
Compact international check-in area
Convenient hotels to DOM and INT
Convenient parking and bus arrivals
Having no train is a big negative but skybus sorta fills the gap to some extent..
I think ADL is Australia's best airport.
SYD, BNE and (I think PER) separate dom/international terminals - an instant fail.
Hobart 



Darwin was v good when it was new.