I agree, after playing Rocket League and Call of Duty: Black Ops 3 with out of the box DS4 support, I'd absolutely LOVE for more games to support it natively.
Speaking of getting icon packs though, I recently played Cook, Serve, Delicious! and while it unfortunately doesn't have native DS4 support, it does have the option to choose the controller you're using (and thus the icons on the game). You can even choose the Wii U Pro Controller! I thought that was a brilliant little touch, and more games should include that IMO.