New cartoon version is like what 2am Saturday or Sunday morning on CN? Anyways way late at freakin night...should stick the good ones early and the crappy ones like Johnny Test way late at night. Or at least stick it back on Saturday and Sunday at like 9am.
There are two bits of good news for the 2011 series. For starters, it's on Toonami, which has a high viewership, and there are a ton of online petitions and Facebook groups dedicated to getting a second season. The second bit of good news is that at the San Diego Comic Con on July 12-15, the creator of the new series was asked about the status. He said that Cartoon Network hasn't officially cancelled it, just put it on hiatus. So, there's a distinct possibility that they could be making new episodes. Besides, if the viewers can put enough pressure on Cartoon Network to bring back Toonami itself, we can put enough pressure on them to create a second series for a show that did reasonably well with the Nielsen ratings.
Toonami caters to a specific age group. Ranging the gambit of ages from pre-teens to young adults, and some adults obviously other wise why comment here? I certainly hope you're all 18 or older. The reason shows like Johnny Test are aired in the mornings and programming blocks like Toonami late at night is for the obvious reason of the aforementioned age group. Younger kids tend to be up earlier out of habit or because of school, so they air young-age appropriator material during those hours. Its safer to air programs like Bleach, uncensored Naruto, and Thundercats in the late and wee hours because the older (and targeted) age range tend to be up that late, and the younger range tends not to be.
Aside from that it also has to do with appropriate viewership. I can count about a dozen families where I live who dont mind shows like Ben Ten and Adventure Time, but would see shows like Full Metal Alchemist and Cowboy Bebop as inappropriate for their kids. A late night broadcast creates a smaller margin of young kids seeing something mom and dad may not want them to.