So there's been talk everywhere recently on how Marvel could be splitting the third Avengers film into two parts. I have been thinking about this for a while too, I mean there would just be too much story and characters for one movie. The idea has worked in the past with the Harry Potter conclusion, there was too much for a 3 hour run time so it was logical. The same goes for [The Avengers 3](movie:738027), if it is true we will be facing Thanos then i do believe he deserves a proper battle. This battle should be the biggest we've seen to date and should be nothing short of epic which a single movie wouldn't do it justice.
I personally wouldn't mind waiting for a couple of months for the next half if it meant we get a more proper conclusion. This would also be the perfect movie to send off certain character from the universe to clear the way for new ones. These characters we've all held dear for so long shouldn't just be killed off like nothing, this is why we need two movies. I mean we've been building up Thanos for years it be a joke just to kill him off like any other Marvel Villain, this is the Mad Titan of course! Though this is not officially confirmed through Marvel one can only hope for more information soon. In the meantime we can only wait for that Avengers Age Of Ultron Trailer!