There's obviously no reason other than No mods / uploaders are willing to do the work, more threads = more obligations.
I bet Furry Bara Magical Academy would get its own thread if you make consistent "Requests", instead of complaining here.
There's exception, I got rejected once, but I think that's just one mod. If it's all-mighty BaasB should be totally green.
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Edit: I made a request, let's see how it goes.