Skoll Shorties

I'm betting he's chilling wherever Varian is. Probably another realm we'll see in a future patch.

Thing is there is quite a large chance Varian's soul was destroyed

I would honestly love it if we just encountered some random blue dude in Bastion just sitting out in the middle of the fields named 'Tirion'. Idk why I find that so appealing, but it just fits so well.

I kind of hope Tirion didn't end up in Bastion. Seems like a fate worst than death.

I do think he ended up in Maldraxxus. A part of me is thinking Bastion for his faith in the light, but then the light wasn’t strong enough to save him, and also Alexandros is in Maldraxxus because he draws strength from his memories, much like Tirion with his driving force(1/2)

being the death of his son in vanilla and everyone else in the destruction of Lordaeron to go on to protect Azeroth, even after Arthas was defeated.

Hmm, well, he too called out to the Light, before he died, didn't he? If so, I think his death was so traumatic and painfull (searing felfire), he might've already forgotten everything and moved on. Then again, all things are possible, so maybe he's still around somewhere.

Considering the timeline... It is (while unlikely) plausible that he is in the maw... Depends a bit when that exactly happened.