The more I've contemplated what you've done, the more I like it.
I like to think that my machete could perform 'stabbing' duties if it had to. I hunt bigger animals from time to time, and while I generally have a decent hunting knife with me, I might find that I needed to use the machete if I mislaid or couldn't reach my belt knife. Consequently, I've generally ground the top of my machete blades to remove the upswept point.... and this makes the blade a bit 'pointier'. But even then, the curve of the cutting edge at the tip of many machetes sweeps up over a very short distance, and this means that there is a lot of blade having to be forced in at the same time if you are trying to push it into a wild hog.
Having said that, I am yet to use a machete on a hog. The circumstance may arise however, especially as I hope to hunt more with traps in the future.
This grinding down of the point also makes it easier to get some machetes to fit nicely in a sheath.
The 'seax' shape you have created with that modification makes quite a nice point. I like points, and points are useful for boring small holes, and for some fine whittling jobs (not that a machete is the ideal tool for whittling). Also, the overall shape you have created should make it a bit easier to design and use a sheath for the tool.
I'm thinking that if I had to, I could probably use that blade as it is to finish a pig. But if I copy what you've done (and I might), I'd be inclined to cut off the end of the blade at a slightly steeper angle, and I would curve up a few millimeters of the cutting edge at the point to harmonise with my conception of the way a stabby blade should be.
I realize that a point modification like this would make the point somewhat vulnerable to damage because, after all, the machete is a chopper and you are bound to hit a rock eventually. However, if the machete is being carried for occasional chopping and other general purposes... and if it is used carefully.... the Bearthedog modification could be a very good idea. Thanks for the inspiration.