We're debating a way to honor ExchB withdrawals. Possibly work out a system where the Paxum is withdrawn to our account, and we can credit you with a MtGox Coupon Code or Transfer it to your TradeHill account for a small fee. Is this something you'd be interested in?
As long as the fee's reasonable and this is stated publicly, sure. MtGox or TradeHill will do for me.
Of course

It would be an option on Bitinstant.com
Dozens of members on this forum use us on a daily basis, we've moved over 200k in USD since end of August.