dlthunder Hi!, there's no softcap for crit but since we spec into "Wound Maker" passive for crit vulnerability it's just not as worth it to invest into flat crit as is it to crit damage, since each stack of crit vulnerability grants 5% base crit (which is scaled by your increased crit chance affixes) againts the afflicted target.
Regarding the second point, getting some crit chance outside of crimson shrouds it's just for consistency since Sync Strike is so expensive you sometimes will find yourself not being able to use it to get stacks reliably, also extra bleed chance is not wasted since that gets us to the 15 bleed stack requirement more quickly.