We mainly can't do the full U link lock using Knightmare Corruptor Iblee because we don't have Parallel eXceed & Accesscode Talker in Link Evolution. Parallel eXceed has proven itself to be the best extender in the game. Without it, Knightmare Corruptor Iblee becomes a brick.
We need these cards for the better version of this build: 3 Knightmare Corruptor Iblee, 3 Parallel eXceed, 1 Accesscode Talker and 1 Firewall Dragon . Mostly, without Parallel eXceed, we cannot use Iblee and without Accesscode Talker, we cannot add her when we don't open with her or in the other case when we don't open with Cynet Codec.
https://youtu.be/hzyMgPWxP8A