How big do you think is the risk of just leaving 200+ coins on Stamp and wait for the next bubble? I mean if they come back, they effectively proven themselves to be trustworthy and pull through with their promises. And I bet they will increase their security measures even further.
Please tell me you are joking. You must be joking. Right? RIGHT???
Why would you even consider leaving your coins on Stamp instead of an offline generated cold wallet? You will be playing beta tester for their upgraded site. They could just get hacked again. Or go bankrupt once their customers have fled them in masses right after opening their site back up again (
if they ever do that...).