Was reading again through everyone’s suggestions.
For Prowess you have the four Actions: Sneak, Dodge, Fight & Aim.
For Defending someone, Move at a run or Lift a heavy item those could be part of the Prowess Attribute itself, not as Actions. If you use Save rolls I’d add them here.
These items would benefit only from the First point in each of the four Actions. Example:
Tom has 3 points in Fight and none in the others. For Defend he has only 1 point. A skilled fighter but not very versatile.
Jane has 2 points in Fight and 1 point in Dodge. Jane would have 2 points to use in Defend.
Fritz has 1 point in Dodge, Aim and Sneak. For Defend Fritz has 3 points! So for Lift, is he strong or savvy enough to grab a thick limb for leverage?
For Defend, Move and a Save I like this. For Lift it maybe a bit “weak”.
This would encourage players who like to use other “Actions/Skills” to diversify. Using the same idea would work if you wanted to make Save Rolls and not have them as Actions.
The Blades in the Dark might address this but I didn’t notice it in Scum and Villainy with a quick look.