I donno? Ive only had it once and have no basis of comparison. So what im gonna type here is hypothetical.Does BA age OK? I didn't like it fresh but I still have a bottle.
I dont see why it couldnt age and develope a little. It pretty much hits all the typical criteria:
Abv is high
No coffee or other adjunct that would fade.
Lots of roasted malt character that should mingle nicely with the previously mentioned alcohol.
I dont think the hops were excessive (if memory serves me right) so its not like thats gonna fade. Though, I remember the bitterness in this felt like it came more from the roast of the grain instead of hops. It will be interesting to see if its roasty malt bitterness is something that will temper with time to turn this into a smoother more approachable stout.
The one negative thing I can think of about aging this is that the body on it isnt going to get any better. It was a little thin in my opinion and aging it isnt gonna help that aspect.