I think 30 is the way to go. I first saw that type of thing with my friends in the Chook Pen having their Bay number on their jerseys. But back then I didnt even really have a club to support, let alone a special bay to glorify.
I think if we want to be also known as the "loud" section for all, we need to also push our section number.
We can also certainly include year numbers somewhere as well and collect them all.
I was actually already going to get DIEHARD "30" LEGION on my jersey, so Im happy others were thinking the same.