xxashxx - I would say that is fine, since a newly revealed character counts as a relevant development, but make that the character that is revealed isn't already confirmed. You'll also want to provide a scan if you are able.
I'd also like to add an additional comment or two about trading.
Yes, you are allowed to revive topics past the two week mark, but please use some common sense. Look at the last post of the thread you want to post in. If it's been a month since today and the last post in that topic... don't revive it. If you really want to strike up a deal with a trader with a long-dead thread, send that person a PM and let them revive it.
I don't think two weeks is sufficient time to declare a trade topic dead. I know I've gone more than two weeks without updating mine. A month is probably sufficient. If the person does still want to continue to trade, a reminder through PM should be enough to get the list updated.
And here's something everyone can do...
Do you have old trading threads? Get them locked.
If you created a thread just to get attention (like "I need 3x Scizor ex fast"), and let's say in a week you were able to get those 3 Scizor ex, report your first post and get your topic locked. This will prevent your thread from being dug up from the depths after it is long dead.
If you would like to hold off on trading for a while, a moderator would be more than happy to lock your topic. They can also unlock your topic when you're ready to start up trading again, so hold off on creating a brand new topic.
I would think that the Trading Corner is the only subforum in which older topics are revived, so I wouldn't worry too much about having ALL your older topics locked (in all other subforums).
That's all from me.