While I agree with the font, but I think dissonance may just be caused by it being different. Will likely grow on us.
The colours been green and gold is probably the smartest decision they made for a number of reasons:
1) Green and Gold is nationally and internationally recognized as the Aussie colours.
2) We want to be recognised as the NATIONAL sporting competition
3) Rugby has a weird piss yellow and sea green colour, and only for their international level (similar to what we have had till now)
4) We look like more of a National Brand than the AFL does just based on the branding. People will see the logo and think "that's Aussie"