I'd have had a gold / yellow keyline around the logo (presently it is white), as for a club that gold features rather prominently, it barely makes it into the logo. A keyline surrounding the logo wouldn't affect it on that jersey, as it sits on the gold section, but on other backgrounds, gold would barely be seen.
I do, however, like club logos that only feature the club's colours. I've been an advocate for a long time for this. Gold Coast ditching black, grey, and (I suppose) that deep yellow and only utilising their colours is fantastic. Canberra last year ditching the black likewise. I said at the time that I'd wished when Newcastle updated their logo that the black would have been replaced by a dark blue. It seems like such a wasted opportunity to me. I've mocked it up at the time and it looks great.