Eco cases are the pits. They ruin artwork, but I'm not even sure how much that matters now that the tissue thin artwork ruins itself by warping before it ever hits store shelves (I'm especially looking at you, recent PS3 games), that drives me crazy! It's new, why does it have to look horrible? :'(
The best strategy is to transplant your new games into the original style game cases, if you can find them. Not sure what you could do for Wii U. Current packaging is becoming so cheap, in a few years time it will be difficult to find any that are still in good condition.