I think that 10^30 is established as Nano/NANO/nano now, whether we like it or not, changing it now will probably cause endless confusion.
As for metric prefixes, It is important to avoid extra superfluous units, they generally don't add any utility and do add plenty of confusion for normies. In a perfect world we would all be using the single unit RAW, but obviously those numbers are extremely large....
To prevent confusion that comes with a multitude of superfluous units, I propose we validate only 3 units, to the exclusion of others:
10^0 - RAW as the base unit, (generally only used in programming)
10^24 - (name?) regular users will use, decimal places avoided.
10^30 - Nano (exchange traders, early adopters, whales)
There is good reason to avoid additional units, we know from several historical examples with the introduction of the metric system, limiting the number of units in use has accelerated the smooth transition to new units, great examples being the Australian Building industry banning the cm from use, other successful examples exist.
Another point of nomenclature, we need to specify exactly how decimal places are always meant to be used, in the same way $1.20 is always written to 2 decimal places, even though the final zero is technically superfluous, I would strongly suggest when decimals of 10^30 are displayed, they should be displayed to 6 decimal places, no more, no less. Most services already do this, but on the occasion that someone uses five it is very jarring.. It makes it a lot easier to visualise the value if it is standardised, because the "number" in the decimal is equal to our other standard unit, and we as humans face endless confusion if we don't stick to these standards, Sats on Binance is an example where they don't follow a convention and we have endless 10X confusion of value. Hope this make sense.
For the 10^24 unit, I think it could be called mNano, not because it is a millionth of a nano, (I actually think it's a little confusing to use a similar name), but because it is similar to mPesa, which is synonymous with digital money in underbanked Africa. We can piggy back some of that brand recognition, it has much better search engine optimisation than Nano, and it is similar enough that trade users can figure it's the same thing. We could push mNano adoption for real life use in Africa, with the easy to handle units, that's my 0.02c anyway.