Hey Guys, thanks for your kind replies.
I really appreciate that a lot.
Perhaps you're right and in the next month AVP will develop into a better game.
I will keep an eye on the forum and have a look at it every now and then.
@ Popsical: Thanks for wishing me luck finding a better game, but I don't need that because it's already on my shelf.

It's called SpaceHulk and I play it since '91 when it came out.
And talking of narrow SpaceHulk: I got the basic game and the 2 expansions (Deathwing and Genestealer) and the Campaign book and a bunch of special rules from White Dwarf.
There are Rules for Terminators, Genestealers, Power Armoured Marines, Chaos Terminators, Eldar Harlequins and guess what…
I will not proceed in converting old SpaceHulk missions for AVP but I'll come up with some cool rules for Predators in SpaceHulk and convert the AVP-missions for SpaceHulk instead. Should be easy and a ton of fun!

We often play MegaSpaceHulk on a much larger scale than the content of the basic box allows. I got three basic games and every special tile you could get from a white dwarf. So we build a gigantic scenario on a couple of tables and play with four marines players each having 6 to 8 Terminators. With rules for exploring crates and rooms ... and a big bad Patriarch at the end.
In addition I designed a set of round corridor tiles and corridors with two spaces width (Including missions for them).
So, plenty of things to explore. Didn't get boring in the last 25 years and will not get even close to it for another 25 years with the Predators as a new Xenos-Force and a few new Aliens and Power Loaders and Sentry Guns and APCs and whatever comes along the way.