Wanted something similar enough to 'bitcoin' to suggest a relation – same general size/sounds/syllables – but different enough to avoid constant confusion.

Spent some time looking at 'tibcoin' – just reversing the 'bit' part – but was concerned with 'T' having too many colliding meanings (tera-, TiB tebibytes, time, etc), and the abbreviation (TBC) being too much like BTC, and 'tibcoin' being too easily confusable with 'bitcoin' by single-letter transposition typos or flubbed speech.

Still, having the internal 'b' seemed helpful for slight bitcoin-suggestiveness, so went through the alphabet for '*ibcoin' options... Most had problems of colliding meanings or unclear/unhelpful pronunciations. 'Z', though, offered:

• 'Z' as a fairly distinctive one-letter abbreviation; 'ZBC' just different enough from 'BTC' to avoid too many mistypes/misviews
• Ƶ (Z-with-slash) available currency-ish unicode character
• 'zib' pronounceable with no obvious word collisions in English
• 'zib' very action verb-able, by my native English speaker ears, compared to 'bit' or 'mic' ("I'll bit 10,000 to you" or "I'll mic 10,000 to you" both sound wrongish compared to "I'll zib 10,000 to you")
• a useful connotation of 'finality' or 'the last' – once this unit is adopted, even satoshi-sized values need no more than 2 decimal places, and the search for new units or places to move the decimal point can end

Stewed on 'zibcoin' for a little while, then decided to write up the case in a few stable public places. I believe it solves the core issue, with the minimum required novelty. But, I know it'll take time to evaluate – to become familiar with the sound/spelling/abbreviations, and observe the compactness/unambiguity benefits compared to other options.

Getting the case out in a few forums lets it enter the thinkable-solution-set for people struggling with BTC-deep-decimal/mBTC/µBTC display issues, which come up repeatedly (including recently among core & wallet developers).

If Zibcoin doesn't sound quite right on first consideration... maybe it will over time, as more people repeatedly face BTC appreciation/denomination/communication issues.

(I thought a microbitcoin-based denomination would be overkill/superficial/silly the first few times I heard the idea... but now see it as so obviously beneficial that I just want to help remove the major remaining obstacle, the awkward language of 'microbitcoin' and 'µBTC'.)