There is not really one fanart for this collection - as the characters will be added during the different phases of the collection
I use extrafanart from the movies as the backgrounds here -
https://www.dropbox.com/sh/ao2iscuiuvlx ... xIrba?dl=0and set my media centre to use extrafanart from the movies rather than a movie set extrafanart.
These are the backgrounds for each of the movies and I will add as the next phases come out (these are just phase one and two artwork) - so no artwork for captain america civil war yet as that is part of phase 3

- they are not totally perfect as they were taken from some real crappy scans I found on the internet - but seem to work ok on my tv (phase one artwork was a little rougher than phase 2 - with shadowing down the middle and staple marks) but it gives a good representation of the characters that are in the movies up to now
A single piece of artwork is difficult to encompass ALL the characters that are used and are going to be used in the future !