Question
Business: On-demand consulting marketplace.
The idea is fairly easy to understand. The market place would have top-tier business talent who have a certain amount of prior experience working for a large consulting firm (eg. Mckinsey Bain etc.) who would offer their wide range of services to the businesses looking to hire a consultant/team of consultants for their project and don't necessarily want to spend a fortune on the big name consultancies.
For a new consulting marketplace the specific answer we're looking for is to a) how to attract top-tier talent to the marketplace and to get them to sign up as an expert
b) how to get businesses to actually use the platform to get their consulting projects executed.
Answer
If i understood correctly. you want to provide a top quality service by someone with a deep experience in the field but at a price affordable to a small/medium sized business. Unfortunately, I think this is not easy to do unless you play on volumes. To hire such people you need to pay them 'a lot', snatch them from other existing opportunities, ask them to provide their knowledge for a return which may not be suitable to them. It seems rather difficult idea to me, personally. However it can be discussed more. Let me know if interested.
P.S: I am new to this platform but old with the skills.