I want to make it a point that I love the idea of the blur and I'm 99% sure the idea was borrowed from Rust (It's no secret Mr. Hicks plays it). However, I feel the current blurriness of the inventory is "too blurry" that you might as well replace it with a black background. I suggest to tone it down similar to how it is in Rust, which I find it to be almost perfect.
Comparison to how it is in Rust vs DayZ [as of EXP 0.61.136700] and what it should probably look like: http://imgur.com/a/IAu42
Whether or not the above is considered, also consider changing it to a "dynamic blur". The amount of gear pieces that are expanded the more blurry your inventory becomes. Maybe keep it very simple and ONLY blur your screen when your backpack is expanded (including large containers and backpacks in the vicinity). It makes no sense to have any amount of inventory blur, as a fresh spawn with only pockets.