Well, Theymos has given a grace period of one month, to wind up all these things including signature campaigns. Now the question comes whether we show respect to the theymos decision and remove our signatures as soon as possible for everyone benefit and to show that we respect the forum decisions or will you people will keep wearing the signatures till 31 December so that you earn every penny you can. Also it means that most users are not willing to let go mixers signatures as they keep them till the last seconds.
The same challenge goes to the campaign managers to announce this or this current week as the last one to wind up things (in favor and agreeing to theymos) or still be willing to go till the last week of December

There is nothing wrong is wearing the signature and promoting the service till the last day as allowed by theymos. If it was too urgent, he would have stopped everything immediately (Like he put the Sinbad to Archival). Nothing to be hurry or getting panic.
Also i think that people will be started finding spots in other non-mixers campaigns and most of them will be moving to the other campaigns as they get accepted while the rest of them will obviously be leaving by the end of this month.