Getting a fiat license requires a real investment so I don't expect to find an office that will be difficult.
I don't know the regulations in Estonia but in my country, you need to show your workplace.
Can we know more about the team? it's impossible to hide the identity of its developer for an exchange platform.
The purpose of the ambassadors is to provide us with information that their audiences bring to their attention.
As you understand, you need someone who helps your promotion. I think you will get better answers if you campaign for a personal portfolio assessment.
Estonia is are very friendly-minded to online companies. Easy registration, and low annual maintenance cost. it is equally easy and cheap for regular business as well as for shell "companies". Here is an explanation from @DKLex about Estonia business starting:
https://bitcointalksearch.org/topic/m.52065542Also, for example, p2pb2b exchange has his Headquarters in the UK: "PARTIDA TECHNOLOGIES LLP company number OC427053 3rd Floor, 120 Baker Street, London, England, W1U 6TU" but everyone can hire this mailing address for 45 euro per year. Already 800 companies use the same address.
So, it's very easy to present any company as serious.