That still definitely remains to be seen. With both Niselur and the Farronites practically begging for peace, Asylon will pretty much be on their own. Especially if Corsanctum and/or Morek ever finish with their wars. Corsanctum can make it to Asylon, and Morek can pacify the northern lands, even if Niselur doesn't roll over. An Astrum V. Asylon war would have an obvious, foregone conclusion. Astrum can easily retake their northern lands, and expand and boost their economy, while Asylon has nowhere to expand. The only thing they can do is lose land.
Asylon's only hope would be to find a powerful ally. There's only only player in the west that can muster that kind of power. Inviting them into the war, even if they would do it, and even if it didn't backfire, as they usually do, calling them into the war would bring a whole heapin' helpin' o' hurtin' onto Asylon. All in all, it would be kinda funny to see it.