How to fix the Sterak's problem.
If they changed Guardian angel to instantly restore one third max health and mana upon taking fatal damage, then it would be comparably useful, but until then it is completely inferior.
The stasis really kills the item. After that 2 seconds, the fight is already over and you're spawning in an angry horde of enemies unless your team is SUPER far ahead and you're just making risky mistakes.
Otherwise the passive is often just being wasted. With the way Sterak's functions, this would be functionally identical, except it wouldn't grant offensive stats and would activate at 100% damage taken, as opposed to 30%. The cooldown could then be lowered to 90 as well.
Another option is to decrease ADC/Assassin base AD, increase AD itemization, and decrease bruiser AD itemization, moving it all towards small base attack increases. Trinity and IBG can now be balanced around this so silly things like the current Blue Ezreal don't happen again.
This would most likely be a pre-season change to better the future direction of LoL, but its still an eventual option.
. Its not because sterak's is crowding them out, its because they're piss-poor at their job, the combine costs are debilitating, and they have absurdly long CDs for what they do. The other anti-burst tools mitigate, at most, ~700 damage. Usually much, much, much less. GA often just gets you killed a second time.