We need more Leona/Braum-esque champs
Champions who do not deal tons of damage when going full tank with just a
for a damage item. We need more true tanks, those who can take a lot of hits without needing a loaded kit for damage. They have multiple forms of CC, not stupid high base stats. The could scale armor/mr, not AD/AP. They don't need to be the damage threat, just the threat from their amount of cc should be enough to make opponent question going into fights if they don't have 100% advantage.

are some others. Without it they have pretty bad damage if they go 6 item tank. Not that they have CC per say though.
or
, its because they lack the waveclear needed to push/defend or want to catch people offguard with surprising damage and maybe win a 1v1 with another tank/support/squishywithlowerthanaveragedamage.