It's not really my thing either (for example, in Mass Effect I always just go the default Sheppard) but plenty of people do like it and do like sharing what they've done and I think it will make more sense for the developers to make an editor to allow the community to keep the game up to date than to spend time making sure the 2017 lists, uniforms and stadiums are 100% accurate.
I doubt very much that AFL Evolution will feature Perth Stadium for example, as it won't host AFL footy this year, but I bet you that if there was an editor, someone will make one in-game and share it with everyone. And that will be awesome. Because if recent history is any guide, there won't be an AFL Evolution 2 for many years.