With the "thin deck" strategy, you should focus on a few key cards with specific effects and remove as many middling cards as possible. By doing so your average hand will have a much higher chance of including the exact cards you want with none of the anti-synergistic fluff in between.

You've heard this kind of advice before if you've ever tried your hand at creative writing, or even academic writing. But I guess I never intuitively Got It as much until my descent into deckbuilders gave me a better sense of recognizing how different parts can interlock [or not] at a given moment.