ok...here's my reply. First of all I am 30 yrs old. I happen to like the Numa Numa dance guy but how about Alien Hominid being the new mascot. He is after all YOUR creation and not represent violence. The Newgrounds tank logo is a symbol to breaking through to NEW GROUNDS without all the censorship that most sites would have. While making money IS important, that's why Newgrounds is on after all, don't go too corporate on us and sell us all out. It is your site and you can do what you want, but if you are going to change the site itself to NUMAgrounds, then I think you should maybe create another site called that. Just look at Heavy and HeavyLite, Kazaa and KazaaLite. Two different sites that are interchangeable with each other.
While one change is really no big deal, take a look at ALL the changes that Newgrounds has made and decide if it is just to make your job easier or enhance the quality of the site. One example is McDonald's breakfast, almost everything is pre-prepared 'warm up' type food. The eggs come in liquid form and biscuits come premade. Slowly, one change after another led McDonald's breakfast to become shitty and pretty much unedible. Changing the NAME to NUMAgrounds is a major step that you really can't go back on without completely losing a big audience in the process. Consider 2 sites as opposed to changing the name. It could mean more ad space as well as a possible toned down version of Newgrounds. It certainly would be a chance to make MORE money while appealing to everyone and getting MORE people. If that's too much work then hire someone for god's sakes.