This machete will be used for chopping, and splitting for the most part. I don't see me needing to hack my way through thick brush, maybe just the clearing of a small space for my one man tent. I agree with you..... as much as I want to save on weight, a thicker blade is a good idea.
In which case I think you'll be needing to pay extra special attention to the geometry. Many light machetes are done like cheapo
scandi knives there is no taper from the spine to the cutting edge. It's just like getting a big steel rule [uniform stock thickness] and dubbing an edge down one side with using a jig. Great 'cos obviously with such little work going into the production it makes them cheap to produce, and in the case of cutting thin stuff like grasses and light vegetation little more is required. Provided the stock is thin and the edge is sharp the blade is through and away no problem. Essentially, provided there is some semblance of a cutting edge and the thing is thin and travelling at good speed happy days. These are the kinds of things that even not so smart people can get to work buy crudely scratching a bevel on with a file. When you consider the business end of a garden strimmer, that little bit of rotating nylon line travelling at speed, and what a strimmer is good for there is no great mystery there.
Your mentioning of chopping and splitting causes me to assume that a bunch of that is going to be cross grain into wood. That's a whole new ballgame. As with knives that need to go either completely through a material, or that the material to be cut will come a good way up the blade, we need to be mindful of something I've said here before [several times] what follows the cutting edge is critical to performance not just sharpness. For a simplified model envisage the difference between how even an excellent
Scandi such as Spyderco's goes through a potato compared to a kitchen knife. The kitchen knife full height grind allows it to bite much deeper. It's the same with green-woodworking tools look at the sectional geometry of a billhook. Whilst you can try to overcome [obfuscate] the deficiency by adding mass or blade length its not ideal. Many try this brute force approach only to find the thing mashes wood or bounces rather that cutting it, and at best gets the performance that could be achieved by something much smaller and lighter that is appropriately shaped.
Why am I labouring this? The reason is that it is extremely appropriate to the Martindale #2. I think the #2 is a splendid little thing that can hold its own extremely well if you can tap the potential. NIB forget it. Only equipped to sharpen the edge forget it. Will to put a bit off time in knocking the shoulders off forget it. To tap into the goodness you'll need to hog off a whole bunch of metal not just knock the shoulders off. In a nutshell consider that you'll be wanting to put a lovely thin convex on it from the cutting edge to at least half way up the blade. Here's how important that is. When I do that I can keep the very cutting edge exactly how it shipped, and just by giving all that relieve there's a day and night performance difference. I've not even considered sharpening it yet and already it has gone from a hopeless tree beater so something that offers the good deep penetration we all like. Tapping into the taper of the grind seamlessly like this from spine to edge is imperative. Only then do I do the sharpening stage a steeper convex at the edge for toughness that blends in to the relief I ground. Done like this size for size and weight for weight against other offerings I really like them. If you are in any doubt about your willingness to put in the work avoid like pox.
If I were in your position and I wasn't willing to go through the above I'd strongly consider a Magnum Machete for some NIB clout. Cheap, wont rust, built around a Becker handle that's prime for tweaking and penetrates wood. In fact I'd like to see Horn Dog put one of these against some equivalent size and weight heavy machetes he has on wood. His no BS style I'm sure will call it like it is and not make assumptions based stainless, or made in China, or low cost. Here's one up against some other by
a man in a shed.