Leave it at 13 weeks - that forces the exchanges to start their powerdown now instead of just holding out for a fork.
And maybe people should consider pulling all their coins from the offending exchanges, not just their steem, and launching a lawsuit. The entire crypto space keeps getting periodically ruined by dodgy exchanges, so if the steem community can take these ones down or at least ruin their reputations permanently, so much the better.
Edit: Just to add to my comment:
Binance has just applied for an operating licence from Singapore. See
I don't see why witnesses can't contact the Singaporean authorities and lodge objections to Binance getting it's licence. It's important for Binance to understand that if they pull dodgy stuff, there are painful consequences.