In all honesty, I was quite fond of "I Am What I Am". That said, the best serious suggestion I've heard was "Jupiter" from Gustav Holst's Planets Suite. It would, however, be infinitely preferable for the Commonwealth to commision the composition of a new piece of music.
I actually agree. By choosing a familiar disco tune, we stereotype ourselves. We have to bear in mind that what we are trying to do here is largely going to be passed on to a future generation, and we wouldn't want to turn them off by our choice of anthem, flag, etc. As for the flag, I had originally come up with one which Vicky pronounced dreadful (It had the equal symbol bursting through chains on a solid blue background, thus indicating our will to burst though inequality... how lofty!) I think using the rainbow flag is also presumptuous; there are and will be many organizations like ours out there that will come and go and for us to try to lay claim to ownership over the rainbow flag would be too bold and offensive to many others. So, a flag is also needed.
However (and it's a really big 'butt'!) 
all of that is premature!
We are putting the cart before the horse, which is what the good people at GLK let themselves be led into.
First, let's get the foundation off the ground legally. That's something Gunnar, Vicky and I have now been working on
(haphazardly, I'm the first to admit; life seems to interfere wherever it can) since Day 1, and we are so close we should do this
now.
That said,
we need 7 people to come forward (well, four if you count the three just mentioned) to be the signatories on the founding papers... that means that four of you who have joined us recently should consider this step - it means that we will have actually moved from a little chat group with big plans to a legal entity which can go about its business and actually pick up where the GLK failed and move this movement forward. In the interest of fairness, we should definitely be looking for at least one or two
lesbian friends to join us as founding members, in order to ensure input equality from "both sides" of the issue. Obviously someone who is bi- or trans- and feels they want to be a part of history is welcome too. Our original purpose was and is to be as all-encompassing and -welcoming as possible!
After we have achieve founding status as a legal entitiy,
then we concentrate on membership building.
Strength lies in numbers.A flag, an anthem, a place to call our own - all of those come
way down the list! If you look at my posts about possible locations for an eventual homeland, please note my use of the work
"eventual" in all of them - the steps to get to owning our own homeland and the steps to independence are all laid out on the website! Rushing everything out of order is
counterproductive.
Now Vicky can kill me for having spilled my guts here and probably let various cats out of various bags,

but I just see a tone here of excitement, which is very very good, but all of it sort of unbridled, which is not so good. Channel the excitement and with it we will move mountains, time and politics!
Enough pontificating.
Vizier