To be fair I haven't played AA and AC in a while, so I might just be misremembering. For all I now, I actually was more annoyed about it before.
And yeah, again, screw time skips. But yeah, I find it funny, we got a grand total of two eps with Rocket on the team, hello time skip, and she's in the League. At least Zatanna got some focus eps. And yeah, she has some nice...assets, but that's Zatanna in a nutshell in every form of media. Beast Boy's VA does annoy the hell out of me, but...idk. I'll give it time. It annoyed me less when he was just Garfield so it's probably just me connecting YJ BB to TT BB and being annoyed.
But after thinking about it, there is one decent reason for such a quick time skip. Greg Weisman has no assurance that YJ will even make it to a Season 3. After what happened with Gargoyles and Spectacular Spider-Man, I wouldn't blame him for feeling a bit...nervous, ESPECIALLY considering how awful they've treated the airing of YJ, not to mention how CN just loves screwing with a lot of shows in general (Symbionic Titan got screwed, Generator Rex, one of their keynotes, didn't even finish their series on TV, their last eps were online only). He probably planned a quick time skip so his vision of having a vast DC lineup in his show would actually...you know, happen before CN screws him. If I think about it like that, I'm less annoyed.