Lifesteal should be a unique stat across every single item regardless of the % of lifesteal added with the only acception to add to this would be runes and masteries.
Lifesteal should pull from the highest % via items, add runes, add masteries and be it.
You shouldnt be able to stack lifesteal across multiple items, this is a big reason why some champs feel oppressive and alot of tanks feel underwhelming.
And we should limit every1 to 1 armor item, 1 ap item, 1 lethality item, etc. xD
I don't think there's enough diversity of life steal items.
I completely agree lifesteal is in a retarded place right now. When your top lane feeds a fiora 5 kills and 10 minutes later she is lifesteal tanking your entire team with a Rav Hydra and BT while singularly handing you all your asses under turret, you know something's not right.
People generally don't stack lifesteal items. Just not efficient.
