I love the multi-fullered blade too...of course. One of my favorite parts!
Here is what an honest-to-goodness fighting kerambit should be:
This is about as basic as it gets - no "styling" involved.
I'm not saying make a kerambit....but rather, consider what makes a good kerambit....and let it guide/influence you.
Couple of thoughts:
1 - the ring should be more "inline" with the fingers and 1"-1.25" in diameter
2 - the ring should allow "thumb room" on the backside
3 - the blade should be oriented more-or-less 90 degrees from the hand. The reason for this is to be able to allow a closed-fist hold where you can punch the blade forward and have it go straight in. A lot of kerambit-makers skip this aspect in favor of looks/etc.
4 - blade should be able to slice and slash (most designers get this one right)
Like I said, this was brought to me by someone whose interests were purely MA, no desire to make money off it, or adhere to any design patterns, etc.
So, IMHO, the redesigns you've done accomplish #1 and #4 much better than the original (which was intended as a chopper). And you're close to getting #2 and #3 with a few of the redesigns.
Keep going - I am curious to see where this ends up. I did always think that the HI Kerambit should have been renamed HI Keramshee (Kerambit + Hanshee) and that a new blade should have been designed that was more fighter-friendly. (the standard Kerambit is a TANK!)
Feel free to ask any questions....I'm happy to help out.
Dan
p.s. I don't mean for you to copy the picture above, but offer it rather as a suggestion "flavor" yours more inline with what makes an ideal kerambit.