We are a team of developer working on a Bitcoin mixer. The method is very simple. Our customers will be sending their bitcoin, we will deliver the premixed coin to the customer. The entire process will be done within three or less blocks.
Many mixer let their customer choose when mixed coin will receive their destination address. Fixed duration probably would make your mixer doesn't stand out much.
Let us know if we will have a business potential with the concept.
With what you've shared, there's no innovative or unique concept to make your service stand out.
We also would like to discuss the fees that will be involved in the process. We don't want to charge high, we don't want to charge less too because managing a business needs to generate profit to continue it. Let us know a balanced number that will be beneficial for both of us and potential customers.
In confusion, just follow what your competitor does.