In other words, I should be able to say "I want 30% of my links to come from r/worldnews, 10% from r/science, 5% each from r/biology, r/programming, r/chemistry, r/physics, r/neuro, 20% from r/foodforthought, and 20% from r/truereddit.
Even a simple UI dragger that would let me boost the prominence of certain subreddits in my feed would be great.. Otherwise, small but awesome subreddits have a tough time getting seen anywhere near the top of my feed.