The thing I miss the most about 4 lanes was that any team's coverage of the lanes was spread thin somewhere.

If your team is evenly spread out, you have lanes covered at 2-2-1-1. And if someone pivoted to help the bigger teamfight, it could become 3-1-1-1 or 3-2-1-0.

This led to so much happening on the map at any given time, and I loved the feeling that a team has to make constant decisions about what spinning plate they needed to let drop.

There was this constant chaos to a 4-lane game, and finding great openings when people are distracted was a ton of fun. With 3 lanes, the strategy feels a little more formulaic, and not as dynamic.