(I am very new) Why not do wardens with the blade champ? They have the flag bearer who can shoot and it has assault so its more total damage in one turn?
Nowadays when Custodes are so much less survivable - Wardens are a better option for BC generally than Guard. The video was released before the codex so that’s where the discrepancy comes from
Not gonna lie if I was ever to get a 4th army it would probably be custodes and I'd be running the fk out of bikes but short of me winning the lottery I ain't going up to 4 armies unless I find some cheap deal for em lol