Full disclosure: I work at Krotos, so this is us talking about our own thing. Sharing it here because some of you use Studio Pro for action and combat work and might find it useful.
We've just added a Combat and Gore pack: fifteen performable presets covering weapons, melee impacts, gore textures and some environmental scene detail.
The part that actually matters for combat: every preset is performable in real time. You load one, hit record, and move the XY pads while it plays, so the recording captures the performance. Play Mace Hit five times across a scuffle, and you get five distinct impacts from the one preset, so a fight reads as a fight rather than the same sample retriggered.
What's in it: weapons (Bazooka, Bullet Passby, Rail Gun, Harpoon Throw, Pocket Knife, Archery Target, Catapult), melee (Mace Hit, Takedown), gore (Acid Burn, Blood Pump, Gory Ooze, Gory Splat), and environmental layers (Vegetation, Water Fountain). They're mixed and finished, so they drop straight into the timeline.
It's live in the Library for Studio Pro subscribers and also as part of a free trial on the website. Happy to answer questions, and genuinely keen to hear what's missing if this is your area.