No, i have no experience with any ICO agency. As you indicated it is very important to get a specific market that is interested in your brand. Your ICO must add value to what your goods or services will offer. You must provide concrete evidence that supports the value of your ICO.
Unfortunately, about 3 initial coin offering (ICO) campaigns closed unsuccessfully every day in 2017 because their marketing approach was ineffective.
You must provide concrete evidence that supports the value of your ICO. You must be able to tell your story. Because, People get involved with brands that are interested in the same social issues that they care about. There must be a purpose that goes beyond profit behind your ICO. Some of the agencies am aware of are: 1.Modern Token 2. Zerion 3. Cryptodex 4. Zerion 5. MLG 6. Marketz 7. Foxtail 8. Crynet 9. Searched