Dead man's is making tank builds stale and buy all means out classes Omen.

Why is it bad? It is the only real tank item that offers any kind of movement speed that is not a short lived active (righteous Glory). It is almost always the first armor item to be bought by basically anyone since it allows to be somewhat sticky with an on hit 200 damage slow by Crushing Blow, up to 60 movement speed when chasing or running away and the 500 health with 50 armor is nothing to laugh at for an item that gives a good amount of utility and speed on top of those base stats.

If the movement speed was half of what it currently is maxing at 30 and the armor was buffed a little to say 60 it would by all means feel like more of a situational item instead of the always go to armor item.

What other items could use some movement speed and be good? Just some concepts but...

Iceborn Gauntlet: 5% Movement speed but 10% less CDR would not kill the item in the slightest. If anything it would be viewed as a good improvement given that there are many other CDR items open for tanky builds. Sheen could easily have 5% movement speed instead of 10% CDR given that lich bane and Trinity both have movement speed already. And if it kills Blue Ezreal which I don't think would happen oh well it is suppose to be a tank item not a endlessly kite marksmen item that makes ashe look meh.

Ohmwreker. By all means it has some form of movement speed already so making the point runner passive be only 15% max but the item always has at least 5% would be a within reason change to this item. Not saying this is all the item needs but this would likely be another step in the right direction.

Warmogs Armor: This is kinda a weird one but it is not bought often since just pure health is not really in demand. So what if it gave 1% movement speed and 5% slow reduction for every 15% health missing?

Just some idea's but dead man's seems to be too good of an item and pushing out other options in nearly every situation on all tanky champs.