It's difficult to provide a specific answer without more information about the startup partnership LLC and the proposed member buyout option. However, generally speaking, a member buyout option can be a useful tool for startup partnership LLCs to provide a way for members to exit the business and for the remaining members to continue operations.

A member buyout option can be structured in different ways, but it typically involves allowing one or more members to buy out the ownership interest of another member who wishes to leave the company. This can be accomplished through a variety of mechanisms, such as a buy-sell agreement or a put/call option.

One important consideration when implementing a member buyout option is to ensure that the terms are fair and equitable for all members, and that they are agreed upon in advance. It's also important to ensure that the option is legally enforceable and does not violate any laws or regulations.

In summary, a member buyout option can be a useful tool for a startup partnership LLC, but it should be carefully designed and implemented with the help of legal and financial professionals to ensure that it meets the needs of the business and all of its members.