I can already make swipe actions repeat while I keep my finger on the touchpad, but it feels a little unnatural that the repeat rate is constant rather than based on how quickly I swipe.
I'd love to be able to swipe through my Chrome tabs with the same tactile, almost "gliding" feeling that OS X scrolling has.
Unfortunately this won't be added in the near term because it would require a complete rewrite of the swipe gestures. However it's on my long-term todo list.
Right on. LMK if you need any testers. I'd offer some dev time, but my personal project time is too scarce already. 
Yeah, I want this to be able to control volume wtih two finger slide on trackpad (same like on touchpad)