Good point about him only being slightly smaller than Ng, Maher was also a similar size and was fine at SG, as i said earlier i reckon his offence would make up for any deficiancies on defence, as he would kill most opposing SG's on offfense.
Iverson was also Mills's size and he played SG in the NBA against bigger and more athletic players.
So i would be fine with signing Mills and having a small guard line up.
Infact id be more annoyed if the 36ers passed up signign Mills for 'team balance reasons' as he would be the best signing the 36ers have had in years probably close to a decade, would bring fans to the game, show other stars that the 36ers are a good club, and if he did end up playing the full season in the NBL, if not sticking around longer, i want it to be with the 36ers, if he wants to come, in short never pass up a Aussie player of Mills's talent if he wants to play for you. If he wants to sign elsewhere then thats cool, but if he ends up signing in say Cairns and it comes out the 36ers rejected him so he went to Cairns, and played several seasons, i think many fans would be annoyed and rightly so.
Last player we didnt sign for team balance reasons was Schenscher (twice) and look where that got us, last and 2nd last, not saying Schenscher would have totally turned our seasons around, but would have only helped improve results, and we wouldnt have had to offer him a better than normal offer to try and get him back like we tried to do this year.