You should know that asking for such things on a public medium won't grant you any favorable results.
I've read that AB drops the ban hammer instantly on anyone getting invited this way anyway.
I'm certain that at this point the only way in is to be regularly active on any number of online anime communities, build a name for yourself, meet the right people, and finally, PM them for an invite.
So if you're a filthy anon like me, with no social media or any noticeable online presence and no friends… well, you're fucked, pal.