I say nay. It is a good idea and you have proper reason to want to do this IMO. I am right there with you thinking the same thing about some of the rediculous topics that are so rudementary and boring. What would you do if you wanted to read the topic later for some reason?? How would you get it back if it is "snuffed out". That would cause a lot of problems for people who accidentaly delete threads that they wanted to read.
It is a clever Idea but I'm sure the response you'll get from an admin is to just not look at the threads and skip over them. Censor them with your own will power... something like that. I am all about listening to what everyone has to say wether they be new or old. Granted, I still dislike some members postings and threads but that is my own personal feelings towards that topic or member. I know that there are so many crazy threads like "top 5...name 'em" but you have to have some bad to balance out the gems you find. There have been some really interesting threads lately too. I think that they have been inspired by the increase in noobie threads too so maybe we should keep the noobie threads comming.
I think that Grant is already working on a solution to the increased number of new members. He is on top of it but because we don't always get some kind of update we don't really know what is going on. Sit tight...