Problem : users get liquidated or do not have enough information to take appropriate decisions
Protocol notification are necessary to empower users.
They will be more confident in their positions, will be able to take better decisions and liquidations could decrease.
Solution : communicate about HAL (or other notification service).
Could add a CTA on the user flow or dashboard. Or tweet about it - make a post.
I remember @oaksprout created a site that was really useful for calculating health ratio. I think it would be great if the Aave site had a tool like that.