Bit is fine. In fact there is already a very famous song about it "shave and a haircut, two bits". That should be our goal. Bitcoin acceptance to the level that a shave and a haircut costs two bits.
Everyone who agrees just needs to start using it, explaining it, publishing it, correcting other (anoying them), etc. It will either catch on or it won't. This is what I hope catches on:
1 satoshi = smallest unit, pretty much in general use today
= "bitcents" also makes some sense and may catch on and evolve back into cents (1/100th)
1 bit = 100 satoshi, eventually every day use, coffee, sandwiches, etc.
1 XBT = 1 bit, should be the official symbol on all exchanges, forex, etc.
1 BTC = 1000000 bits = kept for dealing with larger amounts, may fade
1 Bitcoin/bitcoin as a currency unit fades away
Bitcoin = the Bitcoin protocol
We can even adopt the "shave and a haircut, two bits" knock as the official not so secret Bitcoin knock!