I would say both, honestly, and if it's a money issue then get one at a time or wait to see if you can get either with a good Black Friday deal or something. Shadow of Mordor is super fun and Dragon Age promises to be great. But the nemesis system is a pretty important part of SoM.
I would need to know exactly what "scaled down" means before I could say for sure, but that makes me a little leery. So maybe Dragon Age now, and put SoM on your wish list for when you can upgrade your system.
Shadow of Mordor I know is great, just not sure how much replay value it has. DragonAge has been talked very highly about, and I personally feel it will be a better buy. This is just opinion of course, but I'd wait and get DragonAge.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.