3. It Can Work In Either Universe
If you dont know already, there are two main Trek universes: the Prime one, where everything before the first Abrams film happens, and the Abramsverse, where Enterprise and everything produced by Abrams/Bad Robot happens. Both universes contain Klingons (and they might show up in Star Trek into Darkness), so a Klingon animated series could easily slot into either one. It's just a matter of picking one. Figuring out which universe to choose is a bit of a marketing problem though. Stick to the Prime Universe and Paramount can cross promote with the new TNG Blu-Rays (and hopefully DS9 ones). Go with the Abramsverse and Paramount could use it as part of the promotional campaign for the next movie and keep the brand in the publics eye while it sorts out if there are going to be more Abrams films. Neither choice is perfect, and someone will inevitably complain when their favorite isn't chosen, but more Trek on TV is never a bad thing.