> so it’s less obvious that it’s a bitcoin seed when found by a malicious third party
1. The same words are used for wallets of all kinds of coins, so it's not obvious it's for bitcoin.
2. Anyone recognising the word "satoshi" as related to cryptocurrency in general, would also recognise any mnemonic.
3. You could elect to skip a mnemonic that includes the word if it was a personal concern (but I would discourage selecting a mnemonic base on personal preference, as could get dangerously close to being a brain wallet in effect).
4. You could choose to record just the first 4 characters of each word, "sato" is enough.
5. Where do we stop? the words "coin", "cash", "rich" are in there too.
6. About automated data-recovery, if you are storing mnemonics on HDDs or other digial media, then you have larger security concerns than it just being found during HDD recycling.
But most of all:
7. Removing a word or changing a list is impossible as verification of an existing mnemonic requires the list. To change one word, you would need to provide an alternative to BIP0039 to cope with alternative words, or change all the words to a completely new set of 2048 English words so that it is clear which wordlist is in use.
Regards,
Alan