Guys, if Aegislash is "bad" in Trick Room: we have this thing called Lagging Tail. If it wants to attack last with absolutely 0 regard for TR, it's not that hard to do and Aegislash isn't overly dependant on an item.
Yes, it loses to Pdon's Overheat and +2 Xern and whatnot; but considering those two curbstomp THE ENTIRE FUCKING METAGAME is it really enough reason to drop something straight to B~?
Has issues with Pdon, Xern (I guess?), Yveltal, Ho-Oh (unless you have Head Smash and an Occa Berry but let's be serious), and even Lord Zygarde; but can take on The Khan, MegaMence, and Mawile pretty reliably while, at worst, posing enough threat to Xerneas that it simply cannot ignore you. Plus Aegislash is pretty decent against a fairly good chunk of the non-Uber metagame as we saw in VGC15.
Not played the meta yet but I don't see what makes Aegislash so damn bad. Primordial Sea Ferrothorn sounds fun though.
Just keep it where it is, seems fine. If it gets to the point that it just drags its ass in 2/3 battles and gets no respectable regionals performance, sure, drop it to B. For now... the meta doesn't even officially exist yet. What's bad and what's good is in an infant stage on PS, rankings are pretty volatile.