Could you kindly explain to me the specific requirements for RPL in Rocketpool? I'm particularly interested in understanding the prerequisites for holding this token, and what sort of qualifications or standards must be met in order to participate. Could you also elaborate on the role that RPL plays within the Rocketpool ecosystem? Is there a minimum balance requirement, or any specific actions or responsibilities associated with owning RPL? Additionally, are there any security measures or compliance checks that need to be followed? I'm keen to have a comprehensive understanding of these requirements to ensure that I'm fully prepared to engage with Rocketpool. Thank you for your assistance.