This could also work if you want to keep the martial flavor. Could even have different effects so it's a bit more varied, like when you use Bane you can apply property runes to your weapons, and rather than working just on your target, it works on all similar or associated creatures (which helps differentiate it more from similar abilities from other classes).
That's about what I was thinking, yeah. Something where you can activate a bane effect targeting one creature trait (not a specific creature) and then it stays on for, say, 1 minute. That strongly differentiates it from the creature-specific abilities like Hunt Prey, and eases up significantly on the class' action economy in a way that helps make up for the lack of all the multi-action feats that the pure martials get.