They are adjusting the scaling formulas to be flatter as gear growth rates are the source of the problem where as the numbers output are a symptom of the problem.
Look at the PLD's solo HP in various "endgame" content:
- Wander's Palace - Level 50 minilevel i45 - 3954
- Amdapor Keep (hard) - Level 50 ARR ilevelcap i130 - 9217
- ARF - Level 60 minilevel i142 -14108
- Baelsar's Wall - level 60 HW ilevelcap i270 - 34526
- Ala Mhigo - Level 70 minilevel i280 - 38935
- Ghimlyt Dark - Level 70 StB ilevelcap i400 - 75227
- Bozjan Southern From - level 80 ilevelsync i430 - 111151
- unsynced i522 - 187444
The biggest jumps are at the various caps (where ilevels go up by ~100 each expac) rather than between expansions.