Alright, need to figure out again how to make the fourm give me pings when people comment.
Anyhow, I've spoken to both Titan and DH about this, and so far, chances remain dismal all around.
From what I was told from Titan, the best I can do is send them my resume and a list of all my relevant writing projects, and there's a slight chance I could get called for that. But they informed me this could take a long time; days, weeks, perhaps even months. Maybe even years.
As for DH, as said, they accept prose, so they may still accept AvP content, provided my idea's enough to really wow them, as I'm trying to do something different. But, as I've learned often in my time, different doesn't equate to good. Just...well different.
But, yeah, the AvP rights are currently a mess right now, with Fox getting absorbed into Disney and with DIsney's current works I doubt they'll treat the franchise much better, as shameful as that is. So, from what I've speculated, DH is my best shot, whereas with Titan, the chances are almost less than zero, if that were remotely possible.
At the very least, I still want to give it a go. Worst case, it goes nowhere and I post it onto a fanfiction site so people can still enjoy the work I put in. Once I figure out how to PM properly, and get the rough summary composed, I'll send it to whoever wants to hear me out and judge if it's a good idea or not.
