I guess I never really thought of the way i draft and play FF as streaming but after reading your post that is exactly what I have been doing for years in my main league. It seems to work better in Auction leagues.
QB - So this year I went with Rivers and Cousins with the idea that one of them will take off and i will only need the other for a BYE week filler. I doing this I spent around $10 total on the position.
TE - This year I was all in on the 0 - WR because I had a keeper of M. Thomas for $1 - So I went cheap Doyle and Ebron - Certainly not my first wants but only spend a few $$ total for them and am again hoping one ends top 10.
K and Defense - yet steam every year and only spend $1.
WR2 - Decided to go with Maclin, Britt, Garcon, M. Jones, and Thielen as my steaming. Matchup and streak dependent. So streaming my WR2 all of the way as well.
By doing this it allowed me to spend a huge amount of my cap on D. Johnson, Gordan, and Freeman which will by far by the best 2 RBs and best Flex in the league. So I guess I am streaming everything but RBs, WR1, and FLex...