How do you verify that the order pool is immutable? How many orders will be in one pool?
How does the chain handle cancelled orders? Are there still fees, since it is on the blockchain?
How is the platform blockchain agnostic if you create LGO tokens on the Ethereum blockchain? Wouldn't it forever use Ethereum chain as well?
When did the development of LGO begin?
How fast is LGO going to be, since transactions are on the blockchain?
What other hardware wallets, aside from Ledger, will LGO exchanges support in the future?

When did the development of LGO begin?

Development started in June 2017.