Also, I'd like to point out that the deadly trait is an extremely tiny boost to damage.
The only way to reliably get crits is with a keen rune, giving you 10% crit. Against weak enemies it's stronger, but they already die quickly, so we'll just use 10%.
With deadly d10, you get an average of 5.5 damage added on each crit, so you have 10% chance to do 5.5 damage, an average of about 0.55 damage.
Lets compare that to increasing the damage die one step.
Each damage die increase is 1 damage on average, per die. Already, it is almost double. At higher dice this gets worse. 2 vs 0.55, 3 vs 1.1, and 4 vs 1.65.
It works out to being worth slightly below half of a damage die in many builds. In a class like fighter, with a good chance of crit, I might value it similarly to a damage die increase, but not more.
On propulsive, it's barely noticeable.
At level 1, with 18 dex/16 str build, (a huge investment btw) it gives you +1 damage, (the same as a die step) and then it scales to +2 at level 5 (a level behind your average die increase) Then wait until level 15 and 2 more boosts invested just for a measly +3, at which point you've had 3 dice for a while.