@Timmy
What are you talking about Thanos is one of the biggest name Marvel characters and has been at the center of the majority of Marvel Comic conflicts.
The fact that the Avengers started the process of openning up the doors for characters like Galactus.
I'm not sure if you are new to Marvel and it's background but the E.T comment kind of seems like you don't really know what you're talking about here.
...just sayin...
@Timmy
So based off of your comment it's pretty clear your not really a fan of Marvel or the comics...would that be a correct statement?
One of the biggest issues fans of comics hate is when a movie changes too much of what made the comics special. A good director and producer hell even the writer to need to be able to find a balance to the mix to produce something special. It has to stay true to the roots but at the same time appeal to a large audience ...