I think the fact Mattel included a Red Hood in this line (even though the Joker never appeared in JLU in the Red Hood garb) is very positive news.
Alot of fans were thinking that the Justice League line was more or less dead and buried but this news seems to indicate it has some legs yet. Maybe they'll start making figures of DC Superheroes in the Timmverse animated style that didn't appear in the show, would be nice to see the line continue.
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The Doctor: People assume that time is a strict progression of cause to effect... but actually, from a non-linear, non-subjective viewpoint, it's more like a big ball of wibbly-wobbly.... timey-wimey.... stuff.