I completely agree. The issue yesterday that knocked down main net was the result of a developer testing a dapp they were building on main net and an error in trying to write to the database. Things like this need to be done on testnet but that still isn't an excuse for the holes in the current architecture. Lisk wants to be a network that hosts 100's of decentralized blockchain applications and if just one of those having a simple error can bring down the entire network, we have bigger problems.

They are doing their due diligence and they have already patched the problem. I would rather they find these things now before the network has serious traffic and outages have larger implications, but it still concerns me.