Any consideration to put a smaller cap on the coin? 
What for? You wont see more then 16 Million in your lifetime. It will take a minimum of 50,000 years to mine all 10 Billion. I don't see an issue. 
Practically the first thing anyone asks when looking at a new coin is "What is the total number possible?" In the case of CGA the answer is "10 billion". By the time you have gone on to explain why it doesn't matter and because of the algorithm really there are only going to be a few million they have glazed over and moved onto the next coin. Obviously that doesn't apply to the wise people who are already part of the community, but I think it does to the man on the crypto street.
If, to all intents and purposes, there can't be more than a few tens of millions then why not set the limit at say 40-50 million? I personally think it would do a lot to help people realise it really is a rare coin.
Now (with low diff) that is about 1 coin every 2 minutes. In future (if ASIC mining takes off and diff goes up) that may be much lower.
Only the speed at which new coins enter the market and the increase in the amount of cash flowing into the market determine
the price of the coin, so with the low rate (and likely dropping - not from "halving" but from diff increase) the value per coin should be high.
Putting a cap on the coin beyond our lifetime does not make any difference at all for any investor.
Just my 0.02 CGA