Yes, BO3 does 3 way path, but I am talking about entry ways into a room. Before Ghost, rooms only have mostly 1-3 ways in. Afterward, each room have 4-6 ways in. Sure, it was a pain in the ass to remove campers, but so satisfying once you did it. Now, it's easy to just find an opening and shoot them from behind.Black Ops 3 was definitely not like this. If anything they went too far in the other directioin with every map being the same predictable 3 lane design.
Before Ghost, it was easy to watch the mini map, see the game flow / chock point and move around without getting shot from behind.I always get shot from behind in every COD game so it makes no difference to me.
BO3 is "choke-point the game". They made it a philosophy to go back to the 3-lane system. I like both very traversable multi-path maps and standard, 3-lane maps.
3-lane maps can become very boring though. When you're playing as a team up against another full team it comes down to just camping the middle of the map on all 3 choke points and "head-glitching" as much as you can.
Team vs team should be hard to get around. Team vs random should be worse. I play wit ransoms and love the challenge vs teams.