So, as someone learning to fly, I can say that the METAR format is actually pretty quick to learn and the standardization does make it pretty quick to read, effectively acting as a shorthand. I'm not going to say it couldn't be improved, but it's standardized enough, and contains information that's immediately relevant to everything you're doing, so it's something you pick up quick.
The same is not really true of the NOTAMs, at least as far as I can tell. They're much less standardized, being mostly just plain text with weird awkward abbreviations and all caps that make them slower to scan. There's all kinds of mostly irrelevant metadata; and a lot of the time there are so many of them, most of them not really relevant, that it's really easy to lose track of what is important.
So, I don't think there's much pressing reason to change the METAR format, but oh god do they need to reform the NOTAM system, both the format and better filtering for actual relevance.
Note that this is coming from a student pilot, but I've also seen more experienced pilots express similar frustration with NOTAMs.
The same is not really true of the NOTAMs, at least as far as I can tell. They're much less standardized, being mostly just plain text with weird awkward abbreviations and all caps that make them slower to scan. There's all kinds of mostly irrelevant metadata; and a lot of the time there are so many of them, most of them not really relevant, that it's really easy to lose track of what is important.
So, I don't think there's much pressing reason to change the METAR format, but oh god do they need to reform the NOTAM system, both the format and better filtering for actual relevance.
Note that this is coming from a student pilot, but I've also seen more experienced pilots express similar frustration with NOTAMs.