Your suggestion isn't going to save the forum but drag it down the drain,absolutely close to 90% of users on the forum all put on a signature,whether it's a bitcoin paying signature or an Altcoin signature,they all are signatures,so if everyone's signatures don't show up when posting,then those projects wouldn't consider this forum a viable means of advertisement,and as such bitcoin talk is going to lose a huge amount of traffic and also funds

Think through your ideas before posting,and also note that one may not be on a signature,but be a shitposter,how then is your proposal going to address that
For now keep using the "report to the moderator button" till theymos comes up with something better then an enhanced newbie restriction