Item Modifyer Suggestion

I've been thinking a bit about how item modifier tiers work in POE / POE2 and felt like sharing how I would make items work.

All modifiers would have 3 basic concepts:
1. the level that they would unlock at
2. the Item Level scaling formula: a + b(ilvl)
3. the modifier tier, this would set the min role on the item: 1-10%, 2-30%, 3-50%, 4-70%, 5-90%

An example would be life could have a formula like 20 + 2(ilvl). for ilvl 1: tier 1 item would have 2-22 and tier 5 would be 19-22. for ilvl 80: tier 2 would be 54-180 and tier 4 would be 126-180

this design is to solve 4 main problems:
- Exalting feels bad, the likelihood that you get a good role on a good mod is low so most of the time it doesn't seem worth it. For this system you would just need to hit any life mod and it would improve the item.
- Divines only really useful on uniques. Currently most stat ranges are small so a divine is only going to get a small change. This makes it so a crafted item can have 4 important tier 5 roles and 2 important tier 1 roles and you would only need to divine high on the tier 1 roles.
- Most drops are bad. Because the mod pool is saturated with low tier mods it makes it so getting a useful item is difficult. For this system even on low teir 1 mods a item could get the max value and average rolls on tier 1 would be 55% of a mods top value. This would make most items drop much better then currently.
- Item tier thresholds can be confusing. an ideal base might not be top ilvl because you want the max tier of important mods but not some bad mods at higher ilvls. You then need to look up the mods and find the best ilvl to start with for crafting. this system makes it so higher ilvl is always better.