I do not believe there is a cap. Furthermore sources of crit damage are additive. I do not believe there are diminishing returns other than the fact that taking your crit damage modifier from 1.5 to 1.6 with, say, Minor Force is a bigger percentage gain than taking it from 1.9 to 2.0, because you're already stacking other sources of crit damage.
The problem with going for all out crit damage is that you're trading away crit % for some of that, for example by choosing axes over daggers, Senche over Leviathan, Shadow over Thief (absent Twice Born Star). In general I believe crit % has been more important for sustained PvE damage. For PvP burst, on the other hand, you can wear Mechanical Acuity (outside of current Cyro) and invest the rest into crit damage. Could be a good way to build stamblade, in fact.
I do not believe there is a cap. Furthermore sources of crit damage are additive. I do not believe there are diminishing returns other than the fact that taking your crit damage modifier from 1.5 to 1.6 with, say, Minor Force is a bigger percentage gain than taking it from 1.9 to 2.0, because you're already stacking other sources of crit damage.
The problem with going for all out crit damage is that you're trading away crit % for some of that, for example by choosing axes over daggers, Senche over Leviathan, Shadow over Thief (absent Twice Born Star). In general I believe crit % has been more important for sustained PvE damage. For PvP burst, on the other hand, you can wear Mechanical Acuity (outside of current Cyro) and invest the rest into crit damage. Could be a good way to build stamblade, in fact.
Mechanical Acuity is precisely what we're trying it with. We're either going for Draugrkin (cause of the broken damage boost to DW spammable which I highly doubt is intended) or as mentioned senche. It's just to see where we can push the numbers. I had someone with a Warhorn earlier with me just sporting over 120% crit damage and even bulky tanks started to drop like flies which was very interesting.
Thank you for clarifying.