Best in slot aka currently best gear.
We can just add up str later if we have more dex.
The preference is more towards early where we have a little strength.
Itās more for a safe sake where one does not want to respec as Strength becomes better or you want to be a little more useful at certain situation.
(Pre 1-7 ranks Strength is indeed superior due to no transcend weapons and 0 card damage scaling)
So pretty much we ensure our lost to minimal (crit damage ,attack and skill crit mod) which is why @elzera mention it as a future proof stat is DEX.
Thereās nothing wrong with full dex or full strength. Itās just that full strength as compared to full dex as of now in a sustain damage competition.
Full strength will lose out more. Until revamp we will see.
For now the stand is for meele/archer classes > dex priorities unless itās a gimmick class or have ways to hit that kind of crit % without any investment.
Lastly will be str ( for Max min condition). With the introduction to new gems. Itās no brainier they want to rework STR and INT
You want to ensure Crit rate to hit that hard as a fact. ( I believe you seen the corean Dopples)
Most of them have done multi resets and come out with Full dex ( as a fact because they do have level 9/10 gems) I believe same of them are using Mixtures to cover ( like 2 green 1 red or 2 red 1 green combi etc.) + awaken.
itās up to your preference. If you are intending to invest fully On dopple. By all means go full dex it woulda be better and getting 3 Red gems lv 8-10 to cover the lack of damage.
Decent crit rate is about 75~85%. As this will ensure maximum efficiency
Since investing more is literally either too expensive or wasting damage. That is to say hittng ( 650 crit rate) by various means.
(also reason why people run Priest on new ET with Sage missile hole)
This is to cover magic (range) + Stone skin to keep the dopple alive. Also free monstrance + daino (if he has one)