I agree. I was excited about Cooks as well, and he ended up being all me me me. If you look at our success compared to the teams that take those flashy players year in and year out, we've accomplished more with less at the skill position. Most obvious are Dallas, Oakland (LV) and Cleveland.
We got our #2 WR in Sanders and Harris is emerging and will likely be a solid slot mismatch for us. So thats 3 legit WR, solid TE, 2 solid RBs and we'll see about the fullback. None of it works without blocking.