I'm trying to form a small, private but very trustworthy group to perform arbitrage between US, Euro and Asia. I'm in the US so that is taken care of.
Interesting to divide the market into three regions. I believe I myself cover all regions including US, Asia (now Japanese market has gone) and Europe. There's no region in btc exchange, isn't it? If you meant regulation, US depends on the resident state. Honestly I don't see what are you taking care of in the US market
In addition to lack of advantage, group arbs are so risky considering money transfer.
Looking at the restrictions of Kraken (HQed in California) and recent decision by Vault of Satoshi (Canada), US residents have more limitation depending on residential state and US banks. I don't see any advantage. Exceptions are money order to CampBX, instant trade in coinbase, however there are alternative method to fund them as I do and they are practically out of preference of ARB trade.
I understand it might be your secret but would like to know what you think your advantage of covering US. I would like to know actual benefit before joining your plan.