The biggest thing I hated was dealing with the pumps and power. I live in a rural area where our power goes out easily, and in the 100 mile wilderness in Maine, it can go out easily. So I moved to using coco and handwatering. it's been really easy.
Outside of that, I loved the way I had mine setup, though I didn't run a pure NFT rig.
Dr, do have the ability to run a res outside the 4x2 tent space?