I got a good suggestion.
I'm getting sick of people posting "remove card X and Y because these cards will be out of format soon", despite the fact that the deck is DX-On. As such, I say we should make it MANDATORY to put a tag for the deck, so that everyone can see which format you'll play with it. Everyone NOT putting a tag should have their deck topic closed and get warnings on repeated offenses, and everyone posting "Remove card X and Y as they're not HL-On" in for example a DX-On deck should get warnings too, maybe suspensions on repeated offenses.
The tags I'd see are:
[EX-On] (Some countries play it)
[DX-On] (My nats are in DX-On so why would I want to play HL-On already?)
[HL-On]
[Unl] (Unlimited)
[Help] (If you have a deck which you want to get to a specific format, you can add this deck because you might not now what is in a format, or you are very new, etc etc).
I think it'd help the deck section out a lot.