In my opinion, stats could work something like this-
STR - Every point increases Physical Attack by 1% and by 1 (Block pen formula stays the same)
INT - Every point increases Magic Attack by 1% and by 1
CON - Every point increases Max HP by 1% and defense by 0.25%. HP Recovery increases by 1% per point. Block formula stays the same.
DEX - Formula remains relatively the same, but Accuracy, Crit and Avoid no longer diminish in value as you level up (calculation can be based off of a level 200 character for all levels).
SPR - Every point increases Magic Defense by 1% and Mana by 1%. CC Resist can increase by 0.34% for level 1 CC and 0.25% for all other forms of CC, per point invested into SPR. SP Recovery increases by 1% per point.
Current Magic Amplification values would be worth (1/10) of their current value as percent, but act as a final multiplier to Magic Damages (for example, someone with 280 Magic Amp would have 28% Magic Amp after this change, where their damage is multiplied by 1-1.28 per tick)
Crit Attack changes to function like new Magic Amp for crits, increasing the Crit Damage by a percentage… but I haven’t figured out a good number for it.