Yep, back when DHit was added I thought to myself, why not split Crit into Crit Rate and Crit Strength? Think about SB job designs for a moment. BRD and MNK specifically. They had 'if you crit, you get a proc' (MNK still does), so you'd have choices: Crit STR and DET focus, for hard hitting (but less common) crit Pitch Perfect/TFCs, or you could go Crit Rate and Skill Speed, for a lightning fast gameplay style where you might not Crit as hard, but you're critting very often. They got SAM completely right in SB, with base, 1k-ish and 2k-ish SKS all being like 1% apart on DPS, so I imagined they'd be able to get the balance sort-of right between Speed-MNK and CritHard-MNK.

As for now, if I were working on design at SE? I'd focus on making Piety and Tenacity rebalanced to be 'slightly more desireable than DET'. I feel like DET is the 'fallback' catchall stat of 'it make number go up' in the most boring sense. Like a simple idea I had in SHB was to give WHM mobility (the 2.5s cast times were kinda bleh imo). Now, some people liked those cast times as it made you unable to move well, meaning lilies became a 'movement optimization tool', and I wanted to keep something for them. So:

Water/Water2/Water3/Banish
Cast time: instant
1000mp cost
Deals 200/250/300/350 potency damage

So the optimization would be 'use Banish in raidbuffs, keep enough MP to not screw yourself for the rest of the fight'. A very expensive Ruin 2 alternative. But it'd also give a way to dump the spare MP that Piety provides, meaning that the Piety heavy Crafted set wouldn't suck so much, you could make up for the 'lack of damage cos where's my crit SE' by using Banish more often. Now, we don't need a design like that anymore, because every healer has 1.5s cast times, and I can only come up with an idea that is 'solid enough that I feel confident in pushing it' for SGE, via the big ol' list of reworks I posted. Whatever the solution, I'd like it to be fairly healer-centric though, something that justifies Piety being a healer specific stat, as Tenacity tries to with 'added mitigation'. Even if it's something as simple as 'for every X Piety, your DOT tick is 1 potency stronger' or something. Shame Mastery doesn't exist as a stat, I'm sure I could come up with Masteries for each job. Like 'AST: Improves the % damage increase granted by cards', WAR: 'Greatly increases the potency of Wrath Gauge spenders', or RPR: 'Increases the potency of your Avatar (including Enshroud)' They'd never want to do something like that though, too hard to balance