this becomes scary for the signature participants only
You think? Well you may be right but I feel that it's not only those who are in sig campaigns that worry when there's a downtime because there are also users who don't visit the forum just to complete post quota but to do other things. Believe it or no, the forum is not in existence only for the signature campaigns but to disseminate information about Bitcoin and it's functionality, these campaigns are just a by product.
The way you sound is as if it's every one that depends on the proceeds gotten from the campaigns alone. I'd love to change that impression but I find it might be unnecessary because you've chosen to believe that.