Please be careful with going out for a few weeks. There is a high risk many ppl dont come back. I have observed that several times last 10 years in various industries.
They went offline to do some super duper special updates and when they came back with their new system, everyone got used to another sites and havent come back since then.
Just remember people are addicted to things like this - we wont stop trading, we will trade elsewhere while you are away.
And if TES, BLC, BTCS and some other coins will get listed on cryptsy, unfortunately there will be a percentage of users that wont come back.
In BTC - there is mcxnow, which because of that became "mcx later"
Seriously - be offline only the required few days and then shut down every now and then for 1-2 hours while you update things, but dont go offline for 2-3 weeks in a row.
Cant you just prepare the 'new system' in paralel, while people can do their trades on the old system while new is being developed?
I believe you wont be offline weeks.
Thanks for hearing my opinion
Su100