I looked it up and it turns out Aceh wants to secede because they're mostly extremist Muslims.
So I'm torn, on the one hand it would suck to have another Muslim theocracy state, but on the other hand it would probably be better for Indnosesia on a whole if they didn't have to put up with them anymore.
They mostly want to secede because they are of a different nationality and culture than most of the rest of Indonesia.
The Indonesian government is pretty good at what it does and the pro-independence militia groups are extremely weak. And I don't believe there is any more oppression in Aceh than there is in Jakarta, so there isn't that much in the way of victimization claims.